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-rw-r--r--layout/reftests/backgrounds/vector/wide--auto--percent-width-percent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-nonpercent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-nonpercent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-omitted-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-omitted-height.html34
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-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-nonpercent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-omitted-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-omitted-height.html34
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-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-percent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-nonpercent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-nonpercent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-omitted-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-omitted-height.html34
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-rw-r--r--layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-percent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-nonpercent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-nonpercent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-omitted-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-omitted-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-percent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-percent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--omitted-width-nonpercent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--omitted-width-nonpercent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--omitted-width-omitted-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--omitted-width-omitted-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--omitted-width-percent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--omitted-width-percent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--percent-width-nonpercent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--percent-width-nonpercent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--percent-width-omitted-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--percent-width-omitted-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--percent-width-percent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--contain--percent-width-percent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-nonpercent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-nonpercent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-omitted-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-omitted-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-percent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-percent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--omitted-width-nonpercent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--omitted-width-nonpercent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--omitted-width-omitted-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--omitted-width-omitted-height.html34
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-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--percent-width-nonpercent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--percent-width-nonpercent-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--percent-width-omitted-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--percent-width-omitted-height.html34
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--percent-width-percent-height-viewbox.html35
-rw-r--r--layout/reftests/backgrounds/vector/wide--cover--percent-width-percent-height.html34
274 files changed, 9049 insertions, 0 deletions
diff --git a/layout/reftests/backgrounds/vector/diagonal-percentage-vector-background-ref.html b/layout/reftests/backgrounds/vector/diagonal-percentage-vector-background-ref.html
new file mode 100644
index 000000000..48af46c0d
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/diagonal-percentage-vector-background-ref.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>Scaled vector image without intrinsic dimensions as background, with rendering dependent on the diagonal</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+#outer
+{
+ width: 256px; height: 768px;
+ border: 1px solid black;
+}
+#inner
+{
+ width: 100px; height: 700px;
+ background-image: url(diagonal-scaled-fixed.svg);
+ background-repeat: no-repeat;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/diagonal-percentage-vector-background.html b/layout/reftests/backgrounds/vector/diagonal-percentage-vector-background.html
new file mode 100644
index 000000000..74fbb8b51
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/diagonal-percentage-vector-background.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>Scaled vector image without intrinsic dimensions as background, with rendering dependent on the diagonal</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+#outer
+{
+ width: 256px; height: 768px;
+ border: 1px solid black;
+}
+#inner
+{
+ width: 100px; height: 700px;
+ background-image: url(diagonal-scaled.svg);
+ background-repeat: no-repeat;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/diagonal-scaled-fixed.svg b/layout/reftests/backgrounds/vector/diagonal-scaled-fixed.svg
new file mode 100644
index 000000000..bf0dcfb59
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/diagonal-scaled-fixed.svg
@@ -0,0 +1,10 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg" width="100px" height="700px">
+ <title>Vector image with intrinsic dimensions, reference for diagonal-scaled.svg</title>
+ <rect y="0" width="100px" height="350px" fill="lime"/>
+ <rect y="350px" width="100px" height="350px" fill="aqua"/>
+ <rect y="175px" width="50px" height="350px" fill="fuchsia"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/diagonal-scaled.svg b/layout/reftests/backgrounds/vector/diagonal-scaled.svg
new file mode 100644
index 000000000..391a9abe8
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/diagonal-scaled.svg
@@ -0,0 +1,21 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg">
+ <title>Vector image without intrinsic dimensions with percentage stroke-width (proportional to the diagonal)</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+ <!--
+ A percent stroke-width is resolved with respect to:
+
+ d = sqrt(vh**2 + vw**2) / sqrt(2)
+
+ where vh/vw are the image viewport width/height. Because this image has no
+ intrinsic dimensions or ratio, it expands to fill the entire background
+ positioning area, so its width is 100px and its height is 700px. For those
+ carefully-chosen dimensions, d = 500px, so 10% of that creates a 50px-wide
+ rectangle, vertically centered and horizontally left-aligned in the image.
+ -->
+ <line x1="25%" y1="25%" x2="25%" y2="75%" stroke="fuchsia" stroke-width="10%"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/empty/intrinsic-ratio-no-dimensions.svg b/layout/reftests/backgrounds/vector/empty/intrinsic-ratio-no-dimensions.svg
new file mode 100644
index 000000000..e116d8f1f
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/intrinsic-ratio-no-dimensions.svg
@@ -0,0 +1,10 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 8 0"
+ preserveAspectRatio="none">
+ <title>Image with zero-width ratio, no dimensions</title>
+ <rect y="0" width="100%" height="100%" fill="lime"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/empty/intrinsic-ratio-zero-height.svg b/layout/reftests/backgrounds/vector/empty/intrinsic-ratio-zero-height.svg
new file mode 100644
index 000000000..e691e3f91
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/intrinsic-ratio-zero-height.svg
@@ -0,0 +1,11 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="8px"
+ viewBox="0 0 8 0"
+ preserveAspectRatio="none">
+ <title>Image with zero-height ratio, width</title>
+ <rect y="0" width="100%" height="100%" fill="lime"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/empty/intrinsic-ratio-zero-width.svg b/layout/reftests/backgrounds/vector/empty/intrinsic-ratio-zero-width.svg
new file mode 100644
index 000000000..df3653167
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/intrinsic-ratio-zero-width.svg
@@ -0,0 +1,11 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="8px"
+ viewBox="0 0 0 8"
+ preserveAspectRatio="none">
+ <title>Image with zero-width ratio, width</title>
+ <rect y="0" width="100%" height="100%" fill="lime"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/empty/nonpercent-width-omitted-height-extreme-viewbox.svg b/layout/reftests/backgrounds/vector/empty/nonpercent-width-omitted-height-extreme-viewbox.svg
new file mode 100644
index 000000000..052ed2ab3
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/nonpercent-width-omitted-height-extreme-viewbox.svg
@@ -0,0 +1,11 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="8px"
+ viewBox="0 0 2147483647 1"
+ preserveAspectRatio="none">
+ <title>Image with non-percent width, omitted height, extreme viewbox</title>
+ <rect y="0" width="100%" height="100%" fill="lime"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/empty/omitted-width-nonpercent-height-extreme-viewbox.svg b/layout/reftests/backgrounds/vector/empty/omitted-width-nonpercent-height-extreme-viewbox.svg
new file mode 100644
index 000000000..9e9b0b431
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/omitted-width-nonpercent-height-extreme-viewbox.svg
@@ -0,0 +1,11 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ height="8px"
+ viewBox="0 0 1 2147483647"
+ preserveAspectRatio="none">
+ <title>Image with omitted width, non-percent height, extreme viewbox</title>
+ <rect y="0" width="100%" height="100%" fill="lime"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/empty/ref-tall-empty.html b/layout/reftests/backgrounds/vector/empty/ref-tall-empty.html
new file mode 100644
index 000000000..37e411f08
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/ref-tall-empty.html
@@ -0,0 +1,24 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, empty</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+ </style>
+</head>
+<body>
+<div id="outer"></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/ref-tall-lime.html b/layout/reftests/backgrounds/vector/empty/ref-tall-lime.html
new file mode 100644
index 000000000..d0f18bfcf
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/ref-tall-lime.html
@@ -0,0 +1,28 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, lime fill</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background: lime;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/ref-wide-empty.html b/layout/reftests/backgrounds/vector/empty/ref-wide-empty.html
new file mode 100644
index 000000000..16ad53315
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/ref-wide-empty.html
@@ -0,0 +1,21 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, empty</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+ border: 1px solid black;
+}
+ </style>
+</head>
+<body>
+<div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/ref-wide-lime.html b/layout/reftests/backgrounds/vector/empty/ref-wide-lime.html
new file mode 100644
index 000000000..7ae51768a
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/ref-wide-lime.html
@@ -0,0 +1,28 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, empty</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background: lime;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/reftest-stylo.list b/layout/reftests/backgrounds/vector/empty/reftest-stylo.list
new file mode 100644
index 000000000..a690d7e1e
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/reftest-stylo.list
@@ -0,0 +1,27 @@
+# DO NOT EDIT! This is a auto-generated temporary list for Stylo testing
+== tall--contain--height.html tall--contain--height.html
+== tall--contain--width.html tall--contain--width.html
+== wide--contain--height.html wide--contain--height.html
+== wide--contain--width.html wide--contain--width.html
+
+# These tests fail because of integer overflow; see bug 894555.
+== tall--cover--height.html tall--cover--height.html
+== tall--cover--width.html tall--cover--width.html
+== wide--cover--height.html wide--cover--height.html
+== wide--cover--width.html wide--cover--width.html
+
+== zero-height-ratio-contain.html zero-height-ratio-contain.html
+== zero-height-ratio-cover.html zero-height-ratio-cover.html
+== zero-height-ratio-auto-auto.html zero-height-ratio-auto-auto.html
+== zero-height-ratio-auto-5px.html zero-height-ratio-auto-5px.html
+== zero-height-ratio-5px-auto.html zero-height-ratio-5px-auto.html
+== zero-width-ratio-contain.html zero-width-ratio-contain.html
+== zero-width-ratio-cover.html zero-width-ratio-cover.html
+== zero-width-ratio-auto-auto.html zero-width-ratio-auto-auto.html
+== zero-width-ratio-auto-5px.html zero-width-ratio-auto-5px.html
+== zero-width-ratio-5px-auto.html zero-width-ratio-5px-auto.html
+== zero-ratio-no-dimensions-contain.html zero-ratio-no-dimensions-contain.html
+== zero-ratio-no-dimensions-cover.html zero-ratio-no-dimensions-cover.html
+== zero-ratio-no-dimensions-auto-5px.html zero-ratio-no-dimensions-auto-5px.html
+== zero-ratio-no-dimensions-5px-auto.html zero-ratio-no-dimensions-5px-auto.html
+== zero-ratio-no-dimensions-auto-auto.html zero-ratio-no-dimensions-auto-auto.html
diff --git a/layout/reftests/backgrounds/vector/empty/reftest.list b/layout/reftests/backgrounds/vector/empty/reftest.list
new file mode 100644
index 000000000..d83e5c1da
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/reftest.list
@@ -0,0 +1,26 @@
+== tall--contain--height.html ref-tall-empty.html
+== tall--contain--width.html ref-tall-empty.html
+== wide--contain--height.html ref-wide-empty.html
+== wide--contain--width.html ref-wide-empty.html
+
+# These tests fail because of integer overflow; see bug 894555.
+fails == tall--cover--height.html ref-tall-lime.html
+fails == tall--cover--width.html ref-tall-lime.html
+fails == wide--cover--height.html ref-wide-lime.html
+fails == wide--cover--width.html ref-wide-lime.html
+
+== zero-height-ratio-contain.html ref-tall-empty.html
+== zero-height-ratio-cover.html ref-tall-empty.html
+== zero-height-ratio-auto-auto.html ref-tall-empty.html
+== zero-height-ratio-auto-5px.html ref-tall-empty.html
+== zero-height-ratio-5px-auto.html ref-tall-empty.html
+== zero-width-ratio-contain.html ref-tall-empty.html
+== zero-width-ratio-cover.html ref-tall-empty.html
+== zero-width-ratio-auto-auto.html ref-tall-empty.html
+== zero-width-ratio-auto-5px.html ref-tall-empty.html
+== zero-width-ratio-5px-auto.html ref-tall-empty.html
+== zero-ratio-no-dimensions-contain.html ref-tall-empty.html
+== zero-ratio-no-dimensions-cover.html ref-tall-empty.html
+== zero-ratio-no-dimensions-auto-5px.html ref-tall-empty.html
+== zero-ratio-no-dimensions-5px-auto.html ref-tall-empty.html
+== zero-ratio-no-dimensions-auto-auto.html ref-tall-empty.html
diff --git a/layout/reftests/backgrounds/vector/empty/tall--contain--height.html b/layout/reftests/backgrounds/vector/empty/tall--contain--height.html
new file mode 100644
index 000000000..8c0d38a30
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/tall--contain--height.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for nonpercent-width-omitted-height-extreme-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-extreme-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/tall--contain--width.html b/layout/reftests/backgrounds/vector/empty/tall--contain--width.html
new file mode 100644
index 000000000..2fe4ac8d8
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/tall--contain--width.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for omitted-width-nonpercent-height-extreme-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-extreme-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/tall--cover--height.html b/layout/reftests/backgrounds/vector/empty/tall--cover--height.html
new file mode 100644
index 000000000..be40ed2e8
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/tall--cover--height.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for nonpercent-width-omitted-height-extreme-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-extreme-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/tall--cover--width.html b/layout/reftests/backgrounds/vector/empty/tall--cover--width.html
new file mode 100644
index 000000000..e4fea72c9
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/tall--cover--width.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for omitted-width-nonpercent-height-extreme-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-extreme-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/wide--contain--height.html b/layout/reftests/backgrounds/vector/empty/wide--contain--height.html
new file mode 100644
index 000000000..e81082f10
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/wide--contain--height.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for nonpercent-width-omitted-height-extreme-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-extreme-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/wide--contain--width.html b/layout/reftests/backgrounds/vector/empty/wide--contain--width.html
new file mode 100644
index 000000000..2b88a018c
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/wide--contain--width.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for omitted-width-nonpercent-height-extreme-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-extreme-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/wide--cover--height.html b/layout/reftests/backgrounds/vector/empty/wide--cover--height.html
new file mode 100644
index 000000000..7b6c323e4
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/wide--cover--height.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for nonpercent-width-omitted-height-extreme-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-extreme-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/wide--cover--width.html b/layout/reftests/backgrounds/vector/empty/wide--cover--width.html
new file mode 100644
index 000000000..beb516db3
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/wide--cover--width.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for omitted-width-nonpercent-height-extreme-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-extreme-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-height-ratio-5px-auto.html b/layout/reftests/backgrounds/vector/empty/zero-height-ratio-5px-auto.html
new file mode 100644
index 000000000..059a075fd
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-height-ratio-5px-auto.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero height ratio, 5px auto</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-zero-height.svg);
+ background-repeat: no-repeat;
+ background-size: 5px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-height-ratio-auto-5px.html b/layout/reftests/backgrounds/vector/empty/zero-height-ratio-auto-5px.html
new file mode 100644
index 000000000..99a0b070c
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-height-ratio-auto-5px.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero height ratio, auto 5px</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-zero-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 5px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-height-ratio-auto-auto.html b/layout/reftests/backgrounds/vector/empty/zero-height-ratio-auto-auto.html
new file mode 100644
index 000000000..82d34bfee
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-height-ratio-auto-auto.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero height ratio, auto auto</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-zero-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-height-ratio-contain.html b/layout/reftests/backgrounds/vector/empty/zero-height-ratio-contain.html
new file mode 100644
index 000000000..caf6c57d6
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-height-ratio-contain.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero height ratio, contain</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-zero-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-height-ratio-cover.html b/layout/reftests/backgrounds/vector/empty/zero-height-ratio-cover.html
new file mode 100644
index 000000000..a34dd6164
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-height-ratio-cover.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero height ratio, cover</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-zero-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-5px-auto.html b/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-5px-auto.html
new file mode 100644
index 000000000..2581e299b
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-5px-auto.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero ratio, no dimensions, 5px auto</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-no-dimensions.svg);
+ background-repeat: no-repeat;
+ background-size: 5px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-auto-5px.html b/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-auto-5px.html
new file mode 100644
index 000000000..4198c9d06
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-auto-5px.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero ratio, no dimensions, auto 5px</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-no-dimensions.svg);
+ background-repeat: no-repeat;
+ background-size: auto 5px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-auto-auto.html b/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-auto-auto.html
new file mode 100644
index 000000000..85c20fd1e
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-auto-auto.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero ratio, no dimensions, auto auto</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-no-dimensions.svg);
+ background-repeat: no-repeat;
+ background-size: auto auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-contain.html b/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-contain.html
new file mode 100644
index 000000000..fa62a2531
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-contain.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero ratio, no dimensions, contain</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-no-dimensions.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-cover.html b/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-cover.html
new file mode 100644
index 000000000..771269e2c
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-ratio-no-dimensions-cover.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero ratio, no dimensions, cover</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-no-dimensions.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-width-ratio-5px-auto.html b/layout/reftests/backgrounds/vector/empty/zero-width-ratio-5px-auto.html
new file mode 100644
index 000000000..675e75b39
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-width-ratio-5px-auto.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero height ratio, 5px auto</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-zero-width.svg);
+ background-repeat: no-repeat;
+ background-size: 5px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-width-ratio-auto-5px.html b/layout/reftests/backgrounds/vector/empty/zero-width-ratio-auto-5px.html
new file mode 100644
index 000000000..c16d11df7
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-width-ratio-auto-5px.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero height ratio, auto 5px</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-zero-width.svg);
+ background-repeat: no-repeat;
+ background-size: auto 5px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-width-ratio-auto-auto.html b/layout/reftests/backgrounds/vector/empty/zero-width-ratio-auto-auto.html
new file mode 100644
index 000000000..78a7327ab
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-width-ratio-auto-auto.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero width ratio, auto auto</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-zero-width.svg);
+ background-repeat: no-repeat;
+ background-size: auto auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-width-ratio-contain.html b/layout/reftests/backgrounds/vector/empty/zero-width-ratio-contain.html
new file mode 100644
index 000000000..560498377
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-width-ratio-contain.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero width ratio, contain</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-zero-width.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/empty/zero-width-ratio-cover.html b/layout/reftests/backgrounds/vector/empty/zero-width-ratio-cover.html
new file mode 100644
index 000000000..a1e6c52f4
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/empty/zero-width-ratio-cover.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>zero width ratio, cover</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(intrinsic-ratio-zero-width.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/no-aspect-ratio-normal.html b/layout/reftests/backgrounds/vector/no-aspect-ratio-normal.html
new file mode 100644
index 000000000..72140a91a
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/no-aspect-ratio-normal.html
@@ -0,0 +1,28 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>32px background positioning area size; 32px 32px background-size; for omitted-width-omitted-height-viewbox-no-preserve.svg</title>
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+#inner
+{
+ width: 32px;
+ height: 32px;
+ background-image: url(omitted-width-omitted-height-viewbox-no-preserve.svg);
+ background-repeat: no-repeat;
+ background-size: 32px 32px;
+}
+ </style>
+</head>
+<body>
+<div id="inner"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/layout/reftests/backgrounds/vector/no-aspect-ratio-wide.html b/layout/reftests/backgrounds/vector/no-aspect-ratio-wide.html
new file mode 100644
index 000000000..fd110f617
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/no-aspect-ratio-wide.html
@@ -0,0 +1,28 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background positioning area size; 32px 32px 32px 32px background-size; for omitted-width-omitted-height-viewbox-no-preserve.svg</title>
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+#inner
+{
+ width: 640px;
+ height: 32px;
+ background-image: url(omitted-width-omitted-height-viewbox-no-preserve.svg);
+ background-repeat: no-repeat;
+ background-size: 32px 32px;
+}
+ </style>
+</head>
+<body>
+<div id="inner"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/layout/reftests/backgrounds/vector/nonpercent-width-nonpercent-height-viewbox.svg b/layout/reftests/backgrounds/vector/nonpercent-width-nonpercent-height-viewbox.svg
new file mode 100644
index 000000000..9014ad5bf
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/nonpercent-width-nonpercent-height-viewbox.svg
@@ -0,0 +1,12 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="8px" height="32px"
+ viewBox="0 0 4 64"
+ preserveAspectRatio="none">
+ <title>Image with non-percent width, non-percent height, viewbox</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/nonpercent-width-nonpercent-height.svg b/layout/reftests/backgrounds/vector/nonpercent-width-nonpercent-height.svg
new file mode 100644
index 000000000..60f9e724e
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/nonpercent-width-nonpercent-height.svg
@@ -0,0 +1,10 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="8px" height="32px">
+ <title>Image with non-percentage dimensions</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/nonpercent-width-omitted-height-viewbox.svg b/layout/reftests/backgrounds/vector/nonpercent-width-omitted-height-viewbox.svg
new file mode 100644
index 000000000..8c794b613
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/nonpercent-width-omitted-height-viewbox.svg
@@ -0,0 +1,12 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="8px"
+ viewBox="0 0 4 64"
+ preserveAspectRatio="none">
+ <title>Image with non-percent width, omitted height, viewbox</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/nonpercent-width-omitted-height.svg b/layout/reftests/backgrounds/vector/nonpercent-width-omitted-height.svg
new file mode 100644
index 000000000..b506e625d
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/nonpercent-width-omitted-height.svg
@@ -0,0 +1,10 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="8px">
+ <title>Image with non-percent width, omitted height</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/nonpercent-width-percent-height-viewbox.svg b/layout/reftests/backgrounds/vector/nonpercent-width-percent-height-viewbox.svg
new file mode 100644
index 000000000..3a114ccc5
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/nonpercent-width-percent-height-viewbox.svg
@@ -0,0 +1,12 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="8px" height="50%"
+ viewBox="0 0 4 64"
+ preserveAspectRatio="none">
+ <title>Image with non-percent width, percent height, viewbox</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/nonpercent-width-percent-height.svg b/layout/reftests/backgrounds/vector/nonpercent-width-percent-height.svg
new file mode 100644
index 000000000..398291e3b
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/nonpercent-width-percent-height.svg
@@ -0,0 +1,10 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="8px" height="50%">
+ <title>Image with non-percent width, percent height</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/omitted-width-nonpercent-height-viewbox.svg b/layout/reftests/backgrounds/vector/omitted-width-nonpercent-height-viewbox.svg
new file mode 100644
index 000000000..ebf4d94ec
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/omitted-width-nonpercent-height-viewbox.svg
@@ -0,0 +1,12 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ height="32px"
+ viewBox="0 0 4 64"
+ preserveAspectRatio="none">
+ <title>Image with omitted width, non-percent height, viewbox</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/omitted-width-nonpercent-height.svg b/layout/reftests/backgrounds/vector/omitted-width-nonpercent-height.svg
new file mode 100644
index 000000000..b6985ad01
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/omitted-width-nonpercent-height.svg
@@ -0,0 +1,10 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ height="32px">
+ <title>Image with omitted width, non-percent height</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/omitted-width-omitted-height-viewbox-no-preserve.svg b/layout/reftests/backgrounds/vector/omitted-width-omitted-height-viewbox-no-preserve.svg
new file mode 100644
index 000000000..9acae51aa
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/omitted-width-omitted-height-viewbox-no-preserve.svg
@@ -0,0 +1,10 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 64 64">
+ <title>Image with omitted width, omitted height, viewbox, don't preserve aspect ratio</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/omitted-width-omitted-height-viewbox.svg b/layout/reftests/backgrounds/vector/omitted-width-omitted-height-viewbox.svg
new file mode 100644
index 000000000..bcea95cdc
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/omitted-width-omitted-height-viewbox.svg
@@ -0,0 +1,11 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 4 64"
+ preserveAspectRatio="none">
+ <title>Image with omitted width, omitted height, viewbox</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/omitted-width-omitted-height.svg b/layout/reftests/backgrounds/vector/omitted-width-omitted-height.svg
new file mode 100644
index 000000000..d08621387
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/omitted-width-omitted-height.svg
@@ -0,0 +1,9 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg">
+ <title>Image with omitted width, omitted height</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/omitted-width-percent-height-viewbox.svg b/layout/reftests/backgrounds/vector/omitted-width-percent-height-viewbox.svg
new file mode 100644
index 000000000..265c26a9a
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/omitted-width-percent-height-viewbox.svg
@@ -0,0 +1,12 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ height="50%"
+ viewBox="0 0 4 64"
+ preserveAspectRatio="none">
+ <title>Image with omitted width, percent height, viewbox</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/omitted-width-percent-height.svg b/layout/reftests/backgrounds/vector/omitted-width-percent-height.svg
new file mode 100644
index 000000000..b44560175
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/omitted-width-percent-height.svg
@@ -0,0 +1,10 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ height="50%">
+ <title>Image with omitted width, percent height</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/percent-width-nonpercent-height-viewbox.svg b/layout/reftests/backgrounds/vector/percent-width-nonpercent-height-viewbox.svg
new file mode 100644
index 000000000..645c4c024
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/percent-width-nonpercent-height-viewbox.svg
@@ -0,0 +1,12 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="50%" height="32px"
+ viewBox="0 0 4 64"
+ preserveAspectRatio="none">
+ <title>Image with percent width, non-percent height, viewbox</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/percent-width-nonpercent-height.svg b/layout/reftests/backgrounds/vector/percent-width-nonpercent-height.svg
new file mode 100644
index 000000000..e73311501
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/percent-width-nonpercent-height.svg
@@ -0,0 +1,10 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="50%" height="32px">
+ <title>Image with percent width, non-percent height</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/percent-width-omitted-height-viewbox.svg b/layout/reftests/backgrounds/vector/percent-width-omitted-height-viewbox.svg
new file mode 100644
index 000000000..ef0a46767
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/percent-width-omitted-height-viewbox.svg
@@ -0,0 +1,12 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="50%"
+ viewBox="0 0 4 64"
+ preserveAspectRatio="none">
+ <title>Image with percent width, omitted height, viewbox</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/percent-width-omitted-height.svg b/layout/reftests/backgrounds/vector/percent-width-omitted-height.svg
new file mode 100644
index 000000000..76e9cef3c
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/percent-width-omitted-height.svg
@@ -0,0 +1,10 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="50%">
+ <title>Image with percent width, omitted height</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/percent-width-percent-height-viewbox.svg b/layout/reftests/backgrounds/vector/percent-width-percent-height-viewbox.svg
new file mode 100644
index 000000000..be23fe2d2
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/percent-width-percent-height-viewbox.svg
@@ -0,0 +1,12 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="25%" height="50%"
+ viewBox="0 0 4 64"
+ preserveAspectRatio="none">
+ <title>Image with percent width, percent height, viewbox</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/percent-width-percent-height.svg b/layout/reftests/backgrounds/vector/percent-width-percent-height.svg
new file mode 100644
index 000000000..db197fb30
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/percent-width-percent-height.svg
@@ -0,0 +1,10 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+ width="25%" height="50%">
+ <title>Image with percent width, percent height</title>
+ <rect y="0" width="100%" height="50%" fill="lime"/>
+ <rect y="50%" width="100%" height="50%" fill="aqua"/>
+</svg>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime192x384-aqua192x384.html b/layout/reftests/backgrounds/vector/ref-tall-lime192x384-aqua192x384.html
new file mode 100644
index 000000000..c6e0f556a
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime192x384-aqua192x384.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 192x384 lime, 192x384 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 192px; height: 768px;
+}
+#inner > div { width: 192px; height: 384px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime256x16-aqua256x16.html b/layout/reftests/backgrounds/vector/ref-tall-lime256x16-aqua256x16.html
new file mode 100644
index 000000000..8e31125cc
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime256x16-aqua256x16.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 256x16 lime, 256x16 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 256px; height: 32px;
+}
+#inner > div { width: 256px; height: 16px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime256x384-aqua256x384.html b/layout/reftests/backgrounds/vector/ref-tall-lime256x384-aqua256x384.html
new file mode 100644
index 000000000..106086035
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime256x384-aqua256x384.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 256x384 lime, 256x384 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 256px; height: 768px;
+}
+#inner > div { width: 256px; height: 384px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime256x512-aqua256x256.html b/layout/reftests/backgrounds/vector/ref-tall-lime256x512-aqua256x256.html
new file mode 100644
index 000000000..9b67682cd
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime256x512-aqua256x256.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 256x512 lime, 256x256 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 256px; height: 768px;
+}
+#inner > div { width: 256px; }
+#top { background-color: lime; height: 512px; }
+#bottom { background-color: aqua; height: 256px; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime256x768.html b/layout/reftests/backgrounds/vector/ref-tall-lime256x768.html
new file mode 100644
index 000000000..792c7d7c0
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime256x768.html
@@ -0,0 +1,22 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 256x512 lime, 256x256 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+#outer
+{
+ width: 256px; height: 768px;
+ background-color: lime;
+ border: 1px solid black;
+}
+ </style>
+</head>
+<body>
+<div id="outer"></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime2x16-aqua2x16.html b/layout/reftests/backgrounds/vector/ref-tall-lime2x16-aqua2x16.html
new file mode 100644
index 000000000..d95edcda4
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime2x16-aqua2x16.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 2x16 lime, 2x16 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 2px; height: 32px;
+}
+#inner > div { width: 2px; height: 16px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime32x128-aqua32x128.html b/layout/reftests/backgrounds/vector/ref-tall-lime32x128-aqua32x128.html
new file mode 100644
index 000000000..dbd1e1bfd
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime32x128-aqua32x128.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 32x128 lime, 32x128 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 32px; height: 256px;
+}
+#inner > div { width: 32px; height: 128px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime32x16-aqua32x16.html b/layout/reftests/backgrounds/vector/ref-tall-lime32x16-aqua32x16.html
new file mode 100644
index 000000000..00316e074
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime32x16-aqua32x16.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 32x16 lime, 32x16 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 32px; height: 32px;
+}
+#inner > div { width: 32px; height: 16px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime32x256-aqua32x256.html b/layout/reftests/backgrounds/vector/ref-tall-lime32x256-aqua32x256.html
new file mode 100644
index 000000000..c4d9ab0cf
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime32x256-aqua32x256.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 32x256 lime, 32x256 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 32px; height: 512px;
+}
+#inner > div { width: 32px; height: 256px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime32x384-aqua32x384.html b/layout/reftests/backgrounds/vector/ref-tall-lime32x384-aqua32x384.html
new file mode 100644
index 000000000..aa78e40a7
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime32x384-aqua32x384.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 32x384 lime, 32x384 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 32px; height: 768px;
+}
+#inner > div { width: 32px; height: 384px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime32x64-aqua32x64.html b/layout/reftests/backgrounds/vector/ref-tall-lime32x64-aqua32x64.html
new file mode 100644
index 000000000..f7ffadb7b
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime32x64-aqua32x64.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 32x64 lime, 32x64 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 32px; height: 128px;
+}
+#inner > div { width: 32px; height: 64px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime48x384-aqua48x384.html b/layout/reftests/backgrounds/vector/ref-tall-lime48x384-aqua48x384.html
new file mode 100644
index 000000000..2153798ff
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime48x384-aqua48x384.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 48x384 lime, 48x384 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 48px; height: 768px;
+}
+#inner > div { width: 48px; height: 384px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime4x16-aqua4x16.html b/layout/reftests/backgrounds/vector/ref-tall-lime4x16-aqua4x16.html
new file mode 100644
index 000000000..fc9b39883
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime4x16-aqua4x16.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 4x16 lime, 4x16 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 4px; height: 32px;
+}
+#inner > div { width: 4px; height: 16px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime8x16-aqua8x16.html b/layout/reftests/backgrounds/vector/ref-tall-lime8x16-aqua8x16.html
new file mode 100644
index 000000000..2275861a0
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime8x16-aqua8x16.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 8x16 lime, 8x16 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 8px; height: 32px;
+}
+#inner > div { width: 8px; height: 16px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime8x32-aqua8x32.html b/layout/reftests/backgrounds/vector/ref-tall-lime8x32-aqua8x32.html
new file mode 100644
index 000000000..804a16dd2
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime8x32-aqua8x32.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 8x32 lime, 8x32 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 8px; height: 64px;
+}
+#inner > div { width: 8px; height: 32px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime8x384-aqua8x384.html b/layout/reftests/backgrounds/vector/ref-tall-lime8x384-aqua8x384.html
new file mode 100644
index 000000000..c9ce995ff
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime8x384-aqua8x384.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 8x384 lime, 8x384 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 8px; height: 768px;
+}
+#inner > div { width: 8px; height: 384px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-tall-lime8x64-aqua8x64.html b/layout/reftests/backgrounds/vector/ref-tall-lime8x64-aqua8x64.html
new file mode 100644
index 000000000..8c80b0d43
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-tall-lime8x64-aqua8x64.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall reference, 8x64 lime, 8x64 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 8px; height: 128px;
+}
+#inner > div { width: 8px; height: 64px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime12x128-aqua12x128.html b/layout/reftests/backgrounds/vector/ref-wide-lime12x128-aqua12x128.html
new file mode 100644
index 000000000..dbb2549ee
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime12x128-aqua12x128.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 12x128 lime, 12x128 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 12px; height: 256px;
+}
+#inner > div { width: 12px; height: 128px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime12x16-aqua12x16.html b/layout/reftests/backgrounds/vector/ref-wide-lime12x16-aqua12x16.html
new file mode 100644
index 000000000..3ac4d56ea
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime12x16-aqua12x16.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 12x16 lime, 12x16 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 12px; height: 32px;
+}
+#inner > div { width: 12px; height: 16px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime12x24-aqua12x24.html b/layout/reftests/backgrounds/vector/ref-wide-lime12x24-aqua12x24.html
new file mode 100644
index 000000000..72fd8a263
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime12x24-aqua12x24.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 12x24 lime, 12x24 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 12px; height: 48px;
+}
+#inner > div { width: 12px; height: 24px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime12x96-aqua12x96.html b/layout/reftests/backgrounds/vector/ref-wide-lime12x96-aqua12x96.html
new file mode 100644
index 000000000..f7640c61d
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime12x96-aqua12x96.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 12x96 lime, 12x96 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 12px; height: 192px;
+}
+#inner > div { width: 12px; height: 96px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime16x128-aqua16x128.html b/layout/reftests/backgrounds/vector/ref-wide-lime16x128-aqua16x128.html
new file mode 100644
index 000000000..d19a76d10
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime16x128-aqua16x128.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 16x128 lime, 16x128 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 16px; height: 256px;
+}
+#inner > div { width: 16px; height: 128px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime2x16-aqua2x16.html b/layout/reftests/backgrounds/vector/ref-wide-lime2x16-aqua2x16.html
new file mode 100644
index 000000000..7db5654de
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime2x16-aqua2x16.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 2x16 lime, 2x16 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 2px; height: 32px;
+}
+#inner > div { width: 2px; height: 16px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime64x128-aqua64x128.html b/layout/reftests/backgrounds/vector/ref-wide-lime64x128-aqua64x128.html
new file mode 100644
index 000000000..9bfd66385
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime64x128-aqua64x128.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 64x128 lime, 64x128 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 64px; height: 256px;
+}
+#inner > div { width: 64px; height: 128px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime768x128-aqua768x128.html b/layout/reftests/backgrounds/vector/ref-wide-lime768x128-aqua768x128.html
new file mode 100644
index 000000000..68de63ce7
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime768x128-aqua768x128.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 768x128 lime, 768x128 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 768px; height: 256px;
+}
+#inner > div { width: 768px; height: 128px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime768x16-aqua768x16.html b/layout/reftests/backgrounds/vector/ref-wide-lime768x16-aqua768x16.html
new file mode 100644
index 000000000..ed521f5ba
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime768x16-aqua768x16.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 768x16 lime, 768x16 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 768px; height: 32px;
+}
+#inner > div { width: 768px; height: 16px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime768x256.html b/layout/reftests/backgrounds/vector/ref-wide-lime768x256.html
new file mode 100644
index 000000000..137d4f2cd
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime768x256.html
@@ -0,0 +1,29 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 768x256 lime</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 768px; height: 256px;
+ background-color: lime;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime8x128-aqua8x128.html b/layout/reftests/backgrounds/vector/ref-wide-lime8x128-aqua8x128.html
new file mode 100644
index 000000000..7328e5b12
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime8x128-aqua8x128.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 8x128 lime, 8x128 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 8px; height: 256px;
+}
+#inner > div { width: 8px; height: 128px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime8x16-aqua8x16.html b/layout/reftests/backgrounds/vector/ref-wide-lime8x16-aqua8x16.html
new file mode 100644
index 000000000..ee8489564
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime8x16-aqua8x16.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 8x16 lime, 8x16 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 8px; height: 32px;
+}
+#inner > div { width: 8px; height: 16px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/ref-wide-lime8x64-aqua8x64.html b/layout/reftests/backgrounds/vector/ref-wide-lime8x64-aqua8x64.html
new file mode 100644
index 000000000..069617c2b
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/ref-wide-lime8x64-aqua8x64.html
@@ -0,0 +1,31 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide reference, 8x64 lime, 8x64 aqua</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ width: 8px; height: 128px;
+}
+#inner > div { width: 8px; height: 64px; }
+#top { background-color: lime; }
+#bottom { background-color: aqua; }
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"><div id="top"></div><div id="bottom"></div></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/reftest-stylo.list b/layout/reftests/backgrounds/vector/reftest-stylo.list
new file mode 100644
index 000000000..977ef718b
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/reftest-stylo.list
@@ -0,0 +1,256 @@
+# DO NOT EDIT! This is a auto-generated temporary list for Stylo testing
+include empty/reftest-stylo.list
+
+################################################################################
+# For reference (although the wide--32px-auto* tests/names were changed to
+# avoid viewBox-directed scaling to make the scaled height less than the wide-
+# tests height):
+#
+# for ORIENTATION in tall wide; do for SIZE in 32px-auto auto-32px auto contain cover; do for VIMAGE in *.svg; do cat template.html | sed -e "s/SIZE/$(echo $SIZE | sed -e 's/-/ /')/g" | sed -e "s/VIMAGE/$VIMAGE/g" | sed -e "s/TALLWIDE/$ORIENTATION/g" | sed -e "s/ORIENTATION/$(if [ "$ORIENTATION" = "tall" ]; then echo 'width: 256px; height: 768px'; else echo 'width: 768px; height: 256px'; fi)/g" > $ORIENTATION--$SIZE--$(echo $VIMAGE | sed -e 's/.svg//').html; echo "== $ORIENTATION--$SIZE--$(echo $VIMAGE | sed -e 's/.svg//').html ###" >> reftest-stylo.list; done; echo >> reftest-stylo.list; done; done;
+#
+################################################################################
+
+== tall--32px-auto--nonpercent-width-nonpercent-height.html tall--32px-auto--nonpercent-width-nonpercent-height.html
+== tall--32px-auto--nonpercent-width-nonpercent-height-viewbox.html tall--32px-auto--nonpercent-width-nonpercent-height-viewbox.html
+== tall--32px-auto--nonpercent-width-omitted-height.html tall--32px-auto--nonpercent-width-omitted-height.html
+skip-if(B2G||Mulet) == tall--32px-auto--nonpercent-width-omitted-height-viewbox.html tall--32px-auto--nonpercent-width-omitted-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+skip-if(B2G||Mulet) == tall--32px-auto--nonpercent-width-percent-height.html tall--32px-auto--nonpercent-width-percent-height.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== tall--32px-auto--nonpercent-width-percent-height-viewbox.html tall--32px-auto--nonpercent-width-percent-height-viewbox.html
+skip-if(B2G||Mulet) == tall--32px-auto--omitted-width-nonpercent-height.html tall--32px-auto--omitted-width-nonpercent-height.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== tall--32px-auto--omitted-width-nonpercent-height-viewbox.html tall--32px-auto--omitted-width-nonpercent-height-viewbox.html
+== tall--32px-auto--omitted-width-omitted-height.html tall--32px-auto--omitted-width-omitted-height.html
+== tall--32px-auto--omitted-width-omitted-height-viewbox.html tall--32px-auto--omitted-width-omitted-height-viewbox.html
+skip-if(B2G||Mulet) == tall--32px-auto--omitted-width-percent-height.html tall--32px-auto--omitted-width-percent-height.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+skip-if(B2G||Mulet) == tall--32px-auto--omitted-width-percent-height-viewbox.html tall--32px-auto--omitted-width-percent-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== tall--32px-auto--percent-width-nonpercent-height.html tall--32px-auto--percent-width-nonpercent-height.html
+== tall--32px-auto--percent-width-nonpercent-height-viewbox.html tall--32px-auto--percent-width-nonpercent-height-viewbox.html
+== tall--32px-auto--percent-width-omitted-height.html tall--32px-auto--percent-width-omitted-height.html
+skip-if(B2G||Mulet) == tall--32px-auto--percent-width-omitted-height-viewbox.html tall--32px-auto--percent-width-omitted-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== tall--32px-auto--percent-width-percent-height.html tall--32px-auto--percent-width-percent-height.html
+skip-if(B2G||Mulet) == tall--32px-auto--percent-width-percent-height-viewbox.html tall--32px-auto--percent-width-percent-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+
+== tall--auto-32px--nonpercent-width-nonpercent-height.html tall--auto-32px--nonpercent-width-nonpercent-height.html
+== tall--auto-32px--nonpercent-width-nonpercent-height-viewbox.html tall--auto-32px--nonpercent-width-nonpercent-height-viewbox.html
+skip-if(B2G||Mulet) == tall--auto-32px--nonpercent-width-omitted-height.html tall--auto-32px--nonpercent-width-omitted-height.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== tall--auto-32px--nonpercent-width-omitted-height-viewbox.html tall--auto-32px--nonpercent-width-omitted-height-viewbox.html
+skip-if(B2G||Mulet) == tall--auto-32px--nonpercent-width-percent-height.html tall--auto-32px--nonpercent-width-percent-height.html
+# Initial mulet triage: parity with B2G/B2G Desktop
+== tall--auto-32px--nonpercent-width-percent-height-viewbox.html tall--auto-32px--nonpercent-width-percent-height-viewbox.html
+== tall--auto-32px--omitted-width-nonpercent-height.html tall--auto-32px--omitted-width-nonpercent-height.html
+== tall--auto-32px--omitted-width-nonpercent-height-viewbox.html tall--auto-32px--omitted-width-nonpercent-height-viewbox.html
+== tall--auto-32px--omitted-width-omitted-height.html tall--auto-32px--omitted-width-omitted-height.html
+== tall--auto-32px--omitted-width-omitted-height-viewbox.html tall--auto-32px--omitted-width-omitted-height-viewbox.html
+== tall--auto-32px--omitted-width-percent-height.html tall--auto-32px--omitted-width-percent-height.html
+== tall--auto-32px--omitted-width-percent-height-viewbox.html tall--auto-32px--omitted-width-percent-height-viewbox.html
+== tall--auto-32px--percent-width-nonpercent-height.html tall--auto-32px--percent-width-nonpercent-height.html
+== tall--auto-32px--percent-width-nonpercent-height-viewbox.html tall--auto-32px--percent-width-nonpercent-height-viewbox.html
+== tall--auto-32px--percent-width-omitted-height.html tall--auto-32px--percent-width-omitted-height.html
+== tall--auto-32px--percent-width-omitted-height-viewbox.html tall--auto-32px--percent-width-omitted-height-viewbox.html
+== tall--auto-32px--percent-width-percent-height.html tall--auto-32px--percent-width-percent-height.html
+== tall--auto-32px--percent-width-percent-height-viewbox.html tall--auto-32px--percent-width-percent-height-viewbox.html
+
+skip-if(B2G||Mulet) == tall--auto--nonpercent-width-nonpercent-height.html tall--auto--nonpercent-width-nonpercent-height.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== tall--auto--nonpercent-width-nonpercent-height-viewbox.html tall--auto--nonpercent-width-nonpercent-height-viewbox.html
+== tall--auto--nonpercent-width-omitted-height.html tall--auto--nonpercent-width-omitted-height.html
+== tall--auto--nonpercent-width-omitted-height-viewbox.html tall--auto--nonpercent-width-omitted-height-viewbox.html
+== tall--auto--nonpercent-width-percent-height.html tall--auto--nonpercent-width-percent-height.html
+== tall--auto--nonpercent-width-percent-height-viewbox.html tall--auto--nonpercent-width-percent-height-viewbox.html
+== tall--auto--omitted-width-nonpercent-height.html tall--auto--omitted-width-nonpercent-height.html
+== tall--auto--omitted-width-nonpercent-height-viewbox.html tall--auto--omitted-width-nonpercent-height-viewbox.html
+== tall--auto--omitted-width-omitted-height.html tall--auto--omitted-width-omitted-height.html
+skip-if(B2G||Mulet) == tall--auto--omitted-width-omitted-height-viewbox.html tall--auto--omitted-width-omitted-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== tall--auto--omitted-width-percent-height.html tall--auto--omitted-width-percent-height.html
+== tall--auto--omitted-width-percent-height-viewbox.html tall--auto--omitted-width-percent-height-viewbox.html
+== tall--auto--percent-width-nonpercent-height.html tall--auto--percent-width-nonpercent-height.html
+== tall--auto--percent-width-nonpercent-height-viewbox.html tall--auto--percent-width-nonpercent-height-viewbox.html
+== tall--auto--percent-width-omitted-height.html tall--auto--percent-width-omitted-height.html
+== tall--auto--percent-width-omitted-height-viewbox.html tall--auto--percent-width-omitted-height-viewbox.html
+== tall--auto--percent-width-percent-height.html tall--auto--percent-width-percent-height.html
+== tall--auto--percent-width-percent-height-viewbox.html tall--auto--percent-width-percent-height-viewbox.html
+
+== tall--contain--nonpercent-width-nonpercent-height.html tall--contain--nonpercent-width-nonpercent-height.html
+== tall--contain--nonpercent-width-nonpercent-height-viewbox.html tall--contain--nonpercent-width-nonpercent-height-viewbox.html
+skip-if(B2G||Mulet) == tall--contain--nonpercent-width-omitted-height.html tall--contain--nonpercent-width-omitted-height.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+skip-if(B2G||Mulet) == tall--contain--nonpercent-width-omitted-height-viewbox.html tall--contain--nonpercent-width-omitted-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== tall--contain--nonpercent-width-percent-height.html tall--contain--nonpercent-width-percent-height.html
+== tall--contain--nonpercent-width-percent-height-viewbox.html tall--contain--nonpercent-width-percent-height-viewbox.html
+== tall--contain--omitted-width-nonpercent-height.html tall--contain--omitted-width-nonpercent-height.html
+== tall--contain--omitted-width-nonpercent-height-viewbox.html tall--contain--omitted-width-nonpercent-height-viewbox.html
+== tall--contain--omitted-width-omitted-height.html tall--contain--omitted-width-omitted-height.html
+== tall--contain--omitted-width-omitted-height-viewbox.html tall--contain--omitted-width-omitted-height-viewbox.html
+== tall--contain--omitted-width-percent-height.html tall--contain--omitted-width-percent-height.html
+== tall--contain--omitted-width-percent-height-viewbox.html tall--contain--omitted-width-percent-height-viewbox.html
+== tall--contain--percent-width-nonpercent-height.html tall--contain--percent-width-nonpercent-height.html
+== tall--contain--percent-width-nonpercent-height-viewbox.html tall--contain--percent-width-nonpercent-height-viewbox.html
+== tall--contain--percent-width-omitted-height.html tall--contain--percent-width-omitted-height.html
+== tall--contain--percent-width-omitted-height-viewbox.html tall--contain--percent-width-omitted-height-viewbox.html
+== tall--contain--percent-width-percent-height.html tall--contain--percent-width-percent-height.html
+== tall--contain--percent-width-percent-height-viewbox.html tall--contain--percent-width-percent-height-viewbox.html
+== tall--cover--nonpercent-width-nonpercent-height.html tall--cover--nonpercent-width-nonpercent-height.html
+== tall--cover--nonpercent-width-nonpercent-height-viewbox.html tall--cover--nonpercent-width-nonpercent-height-viewbox.html
+== tall--cover--nonpercent-width-nonpercent-height--crisp.html tall--cover--nonpercent-width-nonpercent-height--crisp.html
+== tall--cover--nonpercent-width-nonpercent-height-viewbox--crisp.html tall--cover--nonpercent-width-nonpercent-height-viewbox--crisp.html
+== tall--cover--nonpercent-width-omitted-height.html tall--cover--nonpercent-width-omitted-height.html
+== tall--cover--nonpercent-width-omitted-height-viewbox.html tall--cover--nonpercent-width-omitted-height-viewbox.html
+== tall--cover--nonpercent-width-percent-height.html tall--cover--nonpercent-width-percent-height.html
+== tall--cover--nonpercent-width-percent-height-viewbox.html tall--cover--nonpercent-width-percent-height-viewbox.html
+== tall--cover--omitted-width-nonpercent-height.html tall--cover--omitted-width-nonpercent-height.html
+== tall--cover--omitted-width-nonpercent-height-viewbox.html tall--cover--omitted-width-nonpercent-height-viewbox.html
+== tall--cover--omitted-width-omitted-height.html tall--cover--omitted-width-omitted-height.html
+== tall--cover--omitted-width-omitted-height-viewbox.html tall--cover--omitted-width-omitted-height-viewbox.html
+== tall--cover--omitted-width-percent-height.html tall--cover--omitted-width-percent-height.html
+== tall--cover--omitted-width-percent-height-viewbox.html tall--cover--omitted-width-percent-height-viewbox.html
+== tall--cover--percent-width-nonpercent-height.html tall--cover--percent-width-nonpercent-height.html
+== tall--cover--percent-width-nonpercent-height-viewbox.html tall--cover--percent-width-nonpercent-height-viewbox.html
+== tall--cover--percent-width-omitted-height.html tall--cover--percent-width-omitted-height.html
+== tall--cover--percent-width-omitted-height-viewbox.html tall--cover--percent-width-omitted-height-viewbox.html
+== tall--cover--percent-width-percent-height.html tall--cover--percent-width-percent-height.html
+== tall--cover--percent-width-percent-height-viewbox.html tall--cover--percent-width-percent-height-viewbox.html
+
+== wide--12px-auto--nonpercent-width-nonpercent-height.html wide--12px-auto--nonpercent-width-nonpercent-height.html
+== wide--12px-auto--nonpercent-width-nonpercent-height-viewbox.html wide--12px-auto--nonpercent-width-nonpercent-height-viewbox.html
+skip-if(B2G||Mulet) == wide--12px-auto--nonpercent-width-omitted-height.html wide--12px-auto--nonpercent-width-omitted-height.html
+# Initial mulet triage: parity with B2G/B2G Desktop
+skip-if(B2G||Mulet) == wide--12px-auto--nonpercent-width-omitted-height-viewbox.html wide--12px-auto--nonpercent-width-omitted-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== wide--12px-auto--nonpercent-width-percent-height.html wide--12px-auto--nonpercent-width-percent-height.html
+== wide--12px-auto--nonpercent-width-percent-height-viewbox.html wide--12px-auto--nonpercent-width-percent-height-viewbox.html
+skip-if(B2G||Mulet) == wide--12px-auto--omitted-width-nonpercent-height.html wide--12px-auto--omitted-width-nonpercent-height.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+skip-if(B2G||Mulet) == wide--12px-auto--omitted-width-nonpercent-height-viewbox.html wide--12px-auto--omitted-width-nonpercent-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== wide--12px-auto--omitted-width-omitted-height.html wide--12px-auto--omitted-width-omitted-height.html
+== wide--12px-auto--omitted-width-omitted-height-viewbox.html wide--12px-auto--omitted-width-omitted-height-viewbox.html
+== wide--12px-auto--omitted-width-percent-height.html wide--12px-auto--omitted-width-percent-height.html
+== wide--12px-auto--omitted-width-percent-height-viewbox.html wide--12px-auto--omitted-width-percent-height-viewbox.html
+== wide--12px-auto--percent-width-nonpercent-height.html wide--12px-auto--percent-width-nonpercent-height.html
+== wide--12px-auto--percent-width-nonpercent-height-viewbox.html wide--12px-auto--percent-width-nonpercent-height-viewbox.html
+== wide--12px-auto--percent-width-omitted-height.html wide--12px-auto--percent-width-omitted-height.html
+skip-if(B2G||Mulet) == wide--12px-auto--percent-width-omitted-height-viewbox.html wide--12px-auto--percent-width-omitted-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+skip-if(B2G||Mulet) == wide--12px-auto--percent-width-percent-height.html wide--12px-auto--percent-width-percent-height.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== wide--12px-auto--percent-width-percent-height-viewbox.html wide--12px-auto--percent-width-percent-height-viewbox.html
+
+== wide--auto-32px--nonpercent-width-nonpercent-height.html wide--auto-32px--nonpercent-width-nonpercent-height.html
+== wide--auto-32px--nonpercent-width-nonpercent-height-viewbox.html wide--auto-32px--nonpercent-width-nonpercent-height-viewbox.html
+== wide--auto-32px--nonpercent-width-omitted-height.html wide--auto-32px--nonpercent-width-omitted-height.html
+== wide--auto-32px--nonpercent-width-omitted-height-viewbox.html wide--auto-32px--nonpercent-width-omitted-height-viewbox.html
+skip-if(B2G||Mulet) == wide--auto-32px--nonpercent-width-percent-height.html wide--auto-32px--nonpercent-width-percent-height.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== wide--auto-32px--nonpercent-width-percent-height-viewbox.html wide--auto-32px--nonpercent-width-percent-height-viewbox.html
+== wide--auto-32px--omitted-width-nonpercent-height.html wide--auto-32px--omitted-width-nonpercent-height.html
+== wide--auto-32px--omitted-width-nonpercent-height-viewbox.html wide--auto-32px--omitted-width-nonpercent-height-viewbox.html
+== wide--auto-32px--omitted-width-omitted-height.html wide--auto-32px--omitted-width-omitted-height.html
+== wide--auto-32px--omitted-width-omitted-height-viewbox.html wide--auto-32px--omitted-width-omitted-height-viewbox.html
+== wide--auto-32px--omitted-width-percent-height.html wide--auto-32px--omitted-width-percent-height.html
+== wide--auto-32px--omitted-width-percent-height-viewbox.html wide--auto-32px--omitted-width-percent-height-viewbox.html
+== wide--auto-32px--percent-width-nonpercent-height.html wide--auto-32px--percent-width-nonpercent-height.html
+== wide--auto-32px--percent-width-nonpercent-height-viewbox.html wide--auto-32px--percent-width-nonpercent-height-viewbox.html
+== wide--auto-32px--percent-width-omitted-height.html wide--auto-32px--percent-width-omitted-height.html
+== wide--auto-32px--percent-width-omitted-height-viewbox.html wide--auto-32px--percent-width-omitted-height-viewbox.html
+== wide--auto-32px--percent-width-percent-height.html wide--auto-32px--percent-width-percent-height.html
+== wide--auto-32px--percent-width-percent-height-viewbox.html wide--auto-32px--percent-width-percent-height-viewbox.html
+
+skip-if(B2G||Mulet) == wide--auto--nonpercent-width-nonpercent-height.html wide--auto--nonpercent-width-nonpercent-height.html
+# Initial mulet triage: parity with B2G/B2G Desktop
+skip-if(B2G||Mulet) == wide--auto--nonpercent-width-nonpercent-height-viewbox.html wide--auto--nonpercent-width-nonpercent-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== wide--auto--nonpercent-width-omitted-height.html wide--auto--nonpercent-width-omitted-height.html
+== wide--auto--nonpercent-width-omitted-height-viewbox.html wide--auto--nonpercent-width-omitted-height-viewbox.html
+== wide--auto--nonpercent-width-percent-height.html wide--auto--nonpercent-width-percent-height.html
+skip-if(B2G||Mulet) == wide--auto--nonpercent-width-percent-height-viewbox.html wide--auto--nonpercent-width-percent-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== wide--auto--omitted-width-nonpercent-height.html wide--auto--omitted-width-nonpercent-height.html
+== wide--auto--omitted-width-nonpercent-height-viewbox.html wide--auto--omitted-width-nonpercent-height-viewbox.html
+== wide--auto--omitted-width-omitted-height.html wide--auto--omitted-width-omitted-height.html
+skip-if(B2G||Mulet) == wide--auto--omitted-width-omitted-height-viewbox.html wide--auto--omitted-width-omitted-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== wide--auto--omitted-width-percent-height.html wide--auto--omitted-width-percent-height.html
+== wide--auto--omitted-width-percent-height-viewbox.html wide--auto--omitted-width-percent-height-viewbox.html
+== wide--auto--percent-width-nonpercent-height.html wide--auto--percent-width-nonpercent-height.html
+== wide--auto--percent-width-nonpercent-height-viewbox.html wide--auto--percent-width-nonpercent-height-viewbox.html
+== wide--auto--percent-width-omitted-height.html wide--auto--percent-width-omitted-height.html
+== wide--auto--percent-width-omitted-height-viewbox.html wide--auto--percent-width-omitted-height-viewbox.html
+== wide--auto--percent-width-percent-height.html wide--auto--percent-width-percent-height.html
+== wide--auto--percent-width-percent-height-viewbox.html wide--auto--percent-width-percent-height-viewbox.html
+
+== wide--contain--nonpercent-width-nonpercent-height.html wide--contain--nonpercent-width-nonpercent-height.html
+== wide--contain--nonpercent-width-nonpercent-height-viewbox.html wide--contain--nonpercent-width-nonpercent-height-viewbox.html
+skip-if(B2G||Mulet) == wide--contain--nonpercent-width-omitted-height.html wide--contain--nonpercent-width-omitted-height.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== wide--contain--nonpercent-width-omitted-height-viewbox.html wide--contain--nonpercent-width-omitted-height-viewbox.html
+== wide--contain--nonpercent-width-percent-height.html wide--contain--nonpercent-width-percent-height.html
+== wide--contain--nonpercent-width-percent-height-viewbox.html wide--contain--nonpercent-width-percent-height-viewbox.html
+== wide--contain--omitted-width-nonpercent-height.html wide--contain--omitted-width-nonpercent-height.html
+== wide--contain--omitted-width-nonpercent-height-viewbox.html wide--contain--omitted-width-nonpercent-height-viewbox.html
+== wide--contain--omitted-width-omitted-height.html wide--contain--omitted-width-omitted-height.html
+== wide--contain--omitted-width-omitted-height-viewbox.html wide--contain--omitted-width-omitted-height-viewbox.html
+== wide--contain--omitted-width-percent-height.html wide--contain--omitted-width-percent-height.html
+== wide--contain--omitted-width-percent-height-viewbox.html wide--contain--omitted-width-percent-height-viewbox.html
+== wide--contain--percent-width-nonpercent-height.html wide--contain--percent-width-nonpercent-height.html
+== wide--contain--percent-width-nonpercent-height-viewbox.html wide--contain--percent-width-nonpercent-height-viewbox.html
+== wide--contain--percent-width-omitted-height.html wide--contain--percent-width-omitted-height.html
+== wide--contain--percent-width-omitted-height-viewbox.html wide--contain--percent-width-omitted-height-viewbox.html
+== wide--contain--percent-width-percent-height.html wide--contain--percent-width-percent-height.html
+== wide--contain--percent-width-percent-height-viewbox.html wide--contain--percent-width-percent-height-viewbox.html
+
+== wide--cover--nonpercent-width-nonpercent-height.html wide--cover--nonpercent-width-nonpercent-height.html
+skip-if(B2G||Mulet) == wide--cover--nonpercent-width-nonpercent-height-viewbox.html wide--cover--nonpercent-width-nonpercent-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== wide--cover--nonpercent-width-omitted-height.html wide--cover--nonpercent-width-omitted-height.html
+== wide--cover--nonpercent-width-omitted-height-viewbox.html wide--cover--nonpercent-width-omitted-height-viewbox.html
+== wide--cover--nonpercent-width-percent-height.html wide--cover--nonpercent-width-percent-height.html
+== wide--cover--nonpercent-width-percent-height-viewbox.html wide--cover--nonpercent-width-percent-height-viewbox.html
+== wide--cover--omitted-width-nonpercent-height.html wide--cover--omitted-width-nonpercent-height.html
+skip-if(B2G||Mulet) == wide--cover--omitted-width-nonpercent-height-viewbox.html wide--cover--omitted-width-nonpercent-height-viewbox.html
+# bug 773482
+# Initial mulet triage: parity with B2G/B2G Desktop
+== wide--cover--omitted-width-omitted-height.html wide--cover--omitted-width-omitted-height.html
+== wide--cover--omitted-width-omitted-height-viewbox.html wide--cover--omitted-width-omitted-height-viewbox.html
+== wide--cover--omitted-width-percent-height.html wide--cover--omitted-width-percent-height.html
+== wide--cover--omitted-width-percent-height-viewbox.html wide--cover--omitted-width-percent-height-viewbox.html
+== wide--cover--percent-width-nonpercent-height.html wide--cover--percent-width-nonpercent-height.html
+== wide--cover--percent-width-nonpercent-height-viewbox.html wide--cover--percent-width-nonpercent-height-viewbox.html
+== wide--cover--percent-width-omitted-height.html wide--cover--percent-width-omitted-height.html
+== wide--cover--percent-width-omitted-height-viewbox.html wide--cover--percent-width-omitted-height-viewbox.html
+== wide--cover--percent-width-percent-height.html wide--cover--percent-width-percent-height.html
+== wide--cover--percent-width-percent-height-viewbox.html wide--cover--percent-width-percent-height-viewbox.html
+
+== diagonal-percentage-vector-background.html diagonal-percentage-vector-background.html
+== no-aspect-ratio-wide.html no-aspect-ratio-wide.html
diff --git a/layout/reftests/backgrounds/vector/reftest.list b/layout/reftests/backgrounds/vector/reftest.list
new file mode 100644
index 000000000..2ed940449
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/reftest.list
@@ -0,0 +1,204 @@
+include empty/reftest.list
+
+################################################################################
+# For reference (although the wide--32px-auto* tests/names were changed to
+# avoid viewBox-directed scaling to make the scaled height less than the wide-
+# tests height):
+#
+# for ORIENTATION in tall wide; do for SIZE in 32px-auto auto-32px auto contain cover; do for VIMAGE in *.svg; do cat template.html | sed -e "s/SIZE/$(echo $SIZE | sed -e 's/-/ /')/g" | sed -e "s/VIMAGE/$VIMAGE/g" | sed -e "s/TALLWIDE/$ORIENTATION/g" | sed -e "s/ORIENTATION/$(if [ "$ORIENTATION" = "tall" ]; then echo 'width: 256px; height: 768px'; else echo 'width: 768px; height: 256px'; fi)/g" > $ORIENTATION--$SIZE--$(echo $VIMAGE | sed -e 's/.svg//').html; echo "== $ORIENTATION--$SIZE--$(echo $VIMAGE | sed -e 's/.svg//').html ###" >> reftest.list; done; echo >> reftest.list; done; done
+#
+################################################################################
+
+== tall--32px-auto--nonpercent-width-nonpercent-height.html ref-tall-lime32x64-aqua32x64.html
+== tall--32px-auto--nonpercent-width-nonpercent-height-viewbox.html ref-tall-lime32x64-aqua32x64.html
+== tall--32px-auto--nonpercent-width-omitted-height.html ref-tall-lime32x384-aqua32x384.html
+== tall--32px-auto--nonpercent-width-omitted-height-viewbox.html ref-tall-lime32x256-aqua32x256.html
+== tall--32px-auto--nonpercent-width-percent-height.html ref-tall-lime32x384-aqua32x384.html
+== tall--32px-auto--nonpercent-width-percent-height-viewbox.html ref-tall-lime32x256-aqua32x256.html
+== tall--32px-auto--omitted-width-nonpercent-height.html ref-tall-lime32x16-aqua32x16.html
+== tall--32px-auto--omitted-width-nonpercent-height-viewbox.html ref-tall-lime32x256-aqua32x256.html
+== tall--32px-auto--omitted-width-omitted-height.html ref-tall-lime32x384-aqua32x384.html
+== tall--32px-auto--omitted-width-omitted-height-viewbox.html ref-tall-lime32x256-aqua32x256.html
+== tall--32px-auto--omitted-width-percent-height.html ref-tall-lime32x384-aqua32x384.html
+== tall--32px-auto--omitted-width-percent-height-viewbox.html ref-tall-lime32x256-aqua32x256.html
+== tall--32px-auto--percent-width-nonpercent-height.html ref-tall-lime32x16-aqua32x16.html
+== tall--32px-auto--percent-width-nonpercent-height-viewbox.html ref-tall-lime32x256-aqua32x256.html
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+== wide--auto--percent-width-nonpercent-height-viewbox.html ref-wide-lime2x16-aqua2x16.html
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+
+== wide--cover--nonpercent-width-nonpercent-height.html ref-wide-lime768x256.html
+== wide--cover--nonpercent-width-nonpercent-height-viewbox.html ref-wide-lime768x256.html
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+== wide--cover--nonpercent-width-percent-height.html ref-wide-lime768x128-aqua768x128.html
+== wide--cover--nonpercent-width-percent-height-viewbox.html ref-wide-lime768x256.html
+== wide--cover--omitted-width-nonpercent-height.html ref-wide-lime768x128-aqua768x128.html
+== wide--cover--omitted-width-nonpercent-height-viewbox.html ref-wide-lime768x256.html
+== wide--cover--omitted-width-omitted-height.html ref-wide-lime768x128-aqua768x128.html
+== wide--cover--omitted-width-omitted-height-viewbox.html ref-wide-lime768x256.html
+== wide--cover--omitted-width-percent-height.html ref-wide-lime768x128-aqua768x128.html
+== wide--cover--omitted-width-percent-height-viewbox.html ref-wide-lime768x256.html
+== wide--cover--percent-width-nonpercent-height.html ref-wide-lime768x128-aqua768x128.html
+== wide--cover--percent-width-nonpercent-height-viewbox.html ref-wide-lime768x256.html
+== wide--cover--percent-width-omitted-height.html ref-wide-lime768x128-aqua768x128.html
+== wide--cover--percent-width-omitted-height-viewbox.html ref-wide-lime768x256.html
+== wide--cover--percent-width-percent-height.html ref-wide-lime768x128-aqua768x128.html
+== wide--cover--percent-width-percent-height-viewbox.html ref-wide-lime768x256.html
+
+== diagonal-percentage-vector-background.html diagonal-percentage-vector-background-ref.html
+== no-aspect-ratio-wide.html no-aspect-ratio-normal.html
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..028bb9f77
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for nonpercent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-nonpercent-height.html
new file mode 100644
index 000000000..a82322c01
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for nonpercent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..9f6ff8ee7
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for nonpercent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-omitted-height.html
new file mode 100644
index 000000000..3dc583a7f
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for nonpercent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..eb665efd3
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for nonpercent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-percent-height.html
new file mode 100644
index 000000000..2f56317a1
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--nonpercent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for nonpercent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..b7488305e
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for omitted-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-nonpercent-height.html
new file mode 100644
index 000000000..9a666cc72
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for omitted-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..79662459b
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for omitted-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-omitted-height.html
new file mode 100644
index 000000000..4e7486893
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for omitted-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-percent-height-viewbox.html
new file mode 100644
index 000000000..dc6887103
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for omitted-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-percent-height.html
new file mode 100644
index 000000000..947ec8df9
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--omitted-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for omitted-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..f07a9cfc6
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for percent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-nonpercent-height.html
new file mode 100644
index 000000000..98a4eeaa5
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for percent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..bbd28a558
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for percent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-omitted-height.html
new file mode 100644
index 000000000..612030bd4
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for percent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..597111ff6
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for percent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-percent-height.html
new file mode 100644
index 000000000..8e8ba9e28
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--32px-auto--percent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: 32px auto; for percent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 32px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..381442e9f
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for nonpercent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-nonpercent-height.html
new file mode 100644
index 000000000..535249a43
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for nonpercent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..a21c0b59a
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for nonpercent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-omitted-height.html
new file mode 100644
index 000000000..613ceea0c
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for nonpercent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..704ed5ec0
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for nonpercent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-percent-height.html
new file mode 100644
index 000000000..b44f11eb4
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--nonpercent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for nonpercent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--omitted-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..9dba9aa4c
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for omitted-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--omitted-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-nonpercent-height.html
new file mode 100644
index 000000000..b1738e19d
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for omitted-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--omitted-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..a33d5f226
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for omitted-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--omitted-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-omitted-height.html
new file mode 100644
index 000000000..6bad152af
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for omitted-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--omitted-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-percent-height-viewbox.html
new file mode 100644
index 000000000..e42096768
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for omitted-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--omitted-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-percent-height.html
new file mode 100644
index 000000000..0f47281a3
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--omitted-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for omitted-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--percent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto--percent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..16d363352
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--percent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for percent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--percent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--auto--percent-width-nonpercent-height.html
new file mode 100644
index 000000000..bcade3197
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--percent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for percent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--percent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto--percent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..570ec91cf
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--percent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for percent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--percent-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--auto--percent-width-omitted-height.html
new file mode 100644
index 000000000..36566da20
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--percent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for percent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--percent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto--percent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..c9bcaaaba
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--percent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for percent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto--percent-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--auto--percent-width-percent-height.html
new file mode 100644
index 000000000..784d15b63
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto--percent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto; for percent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..32e6a6ab3
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for nonpercent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-nonpercent-height.html
new file mode 100644
index 000000000..f07ca6aba
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for nonpercent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..15061db70
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for nonpercent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-omitted-height.html
new file mode 100644
index 000000000..2a2e99a31
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for nonpercent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..6c7855d68
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for nonpercent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-percent-height.html
new file mode 100644
index 000000000..320ab0e01
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--nonpercent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for nonpercent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..f0129ba21
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for omitted-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-nonpercent-height.html
new file mode 100644
index 000000000..700142d5a
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for omitted-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..effa92b3f
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for omitted-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-omitted-height.html
new file mode 100644
index 000000000..5a5ce372d
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for omitted-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-percent-height-viewbox.html
new file mode 100644
index 000000000..a38195c7c
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for omitted-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-percent-height.html
new file mode 100644
index 000000000..0e3b7a1e4
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--omitted-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for omitted-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..d76373480
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for percent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-nonpercent-height.html
new file mode 100644
index 000000000..93d5bc2aa
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for percent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..dec312867
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for percent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-omitted-height.html
new file mode 100644
index 000000000..4f8e57da7
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for percent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..61c83a481
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for percent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-percent-height.html
new file mode 100644
index 000000000..c1c35a8cd
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--auto-32px--percent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: auto 32px; for percent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..35c522456
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for nonpercent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-nonpercent-height.html
new file mode 100644
index 000000000..0460b9429
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for nonpercent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..1b9a541f9
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for nonpercent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-omitted-height.html
new file mode 100644
index 000000000..95a5c1574
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for nonpercent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..3f8fdd239
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for nonpercent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-percent-height.html
new file mode 100644
index 000000000..4d365e0a5
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--nonpercent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for nonpercent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--omitted-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..82d9d3d94
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for omitted-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--omitted-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-nonpercent-height.html
new file mode 100644
index 000000000..6fb7f6aa5
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for omitted-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--omitted-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..0ddec7426
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for omitted-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--omitted-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-omitted-height.html
new file mode 100644
index 000000000..453aeca77
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for omitted-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--omitted-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-percent-height-viewbox.html
new file mode 100644
index 000000000..e34d8703e
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for omitted-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--omitted-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-percent-height.html
new file mode 100644
index 000000000..986eb2b52
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--omitted-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for omitted-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--percent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--contain--percent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..bca47e5d1
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--percent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for percent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--percent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--contain--percent-width-nonpercent-height.html
new file mode 100644
index 000000000..56e0587a3
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--percent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for percent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--percent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--contain--percent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..c758225bc
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--percent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for percent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--percent-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--contain--percent-width-omitted-height.html
new file mode 100644
index 000000000..e454f28fc
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--percent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for percent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--percent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--contain--percent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..0123410e3
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--percent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for percent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--contain--percent-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--contain--percent-width-percent-height.html
new file mode 100644
index 000000000..14c483e23
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--contain--percent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: contain; for percent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height--crisp.html b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height--crisp.html
new file mode 100644
index 000000000..00356e83b
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height--crisp.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for nonpercent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+ image-rendering: -moz-crisp-edges;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height-viewbox--crisp.html b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height-viewbox--crisp.html
new file mode 100644
index 000000000..71e9790eb
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height-viewbox--crisp.html
@@ -0,0 +1,36 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for nonpercent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+ image-rendering: -moz-crisp-edges;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..7029cc709
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,36 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for nonpercent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+ /* XXX image-rendering: -moz-crisp-edges; */
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height.html
new file mode 100644
index 000000000..3574bf501
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-nonpercent-height.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for nonpercent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+ /* XXX image-rendering: -moz-crisp-edges; */
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..a46ace1e6
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for nonpercent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-omitted-height.html
new file mode 100644
index 000000000..38ff1e6d0
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for nonpercent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..f68cc62f9
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for nonpercent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-percent-height.html
new file mode 100644
index 000000000..87128908f
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--nonpercent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for nonpercent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--omitted-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..b0be12e5f
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for omitted-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--omitted-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-nonpercent-height.html
new file mode 100644
index 000000000..a560625f8
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for omitted-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--omitted-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..6d77c6844
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for omitted-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--omitted-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-omitted-height.html
new file mode 100644
index 000000000..e00cfed97
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for omitted-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--omitted-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-percent-height-viewbox.html
new file mode 100644
index 000000000..fefb92775
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for omitted-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--omitted-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-percent-height.html
new file mode 100644
index 000000000..c9b8006b4
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--omitted-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for omitted-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--percent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--cover--percent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..8549f85b5
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--percent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for percent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--percent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/tall--cover--percent-width-nonpercent-height.html
new file mode 100644
index 000000000..7734a3b4f
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--percent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for percent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--percent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--cover--percent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..2be708373
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--percent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for percent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--percent-width-omitted-height.html b/layout/reftests/backgrounds/vector/tall--cover--percent-width-omitted-height.html
new file mode 100644
index 000000000..1bd5b3cf2
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--percent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for percent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--percent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/tall--cover--percent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..e87ba6ba6
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--percent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for percent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/tall--cover--percent-width-percent-height.html b/layout/reftests/backgrounds/vector/tall--cover--percent-width-percent-height.html
new file mode 100644
index 000000000..4930568eb
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/tall--cover--percent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>tall background-size: cover; for percent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 256px; height: 768px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/template.html b/layout/reftests/backgrounds/vector/template.html
new file mode 100644
index 000000000..65a403636
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/template.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>TALLWIDE background-size: SIZE; for VIMAGE</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ ORIENTATION;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(VIMAGE);
+ background-repeat: no-repeat;
+ background-size: SIZE;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..3acb1471e
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for nonpercent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-nonpercent-height.html
new file mode 100644
index 000000000..c68bb126e
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for nonpercent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..5fac51f7a
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for nonpercent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-omitted-height.html
new file mode 100644
index 000000000..39139bf07
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for nonpercent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..2004537d5
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for nonpercent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-percent-height.html
new file mode 100644
index 000000000..12421f6d6
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--nonpercent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for nonpercent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..a735c0cfd
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for omitted-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-nonpercent-height.html
new file mode 100644
index 000000000..bc020f0fc
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for omitted-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..169e37994
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for omitted-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-omitted-height.html
new file mode 100644
index 000000000..684d18a17
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for omitted-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-percent-height-viewbox.html
new file mode 100644
index 000000000..c2f82c36e
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for omitted-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-percent-height.html
new file mode 100644
index 000000000..6f3ddb69a
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--omitted-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for omitted-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..0bc05e730
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for percent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-nonpercent-height.html
new file mode 100644
index 000000000..9b4b2acc7
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for percent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..0c30c0b35
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for percent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-omitted-height.html
new file mode 100644
index 000000000..cc873a55b
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for percent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..42614c4b5
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for percent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-percent-height.html
new file mode 100644
index 000000000..e39b61093
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--12px-auto--percent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: 12px auto; for percent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: 12px auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..1cd8d94c3
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for nonpercent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-nonpercent-height.html
new file mode 100644
index 000000000..08bd7f256
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for nonpercent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..71cf8f61e
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for nonpercent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-omitted-height.html
new file mode 100644
index 000000000..0ace95021
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for nonpercent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..e1f7f2618
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for nonpercent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-percent-height.html
new file mode 100644
index 000000000..18312be47
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--nonpercent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for nonpercent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--omitted-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..f66416b17
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for omitted-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--omitted-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-nonpercent-height.html
new file mode 100644
index 000000000..f6f2be731
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for omitted-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--omitted-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..78f3a3a36
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for omitted-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--omitted-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-omitted-height.html
new file mode 100644
index 000000000..83c76cd82
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for omitted-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--omitted-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-percent-height-viewbox.html
new file mode 100644
index 000000000..e04a81216
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for omitted-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--omitted-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-percent-height.html
new file mode 100644
index 000000000..99a7cd2b0
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--omitted-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for omitted-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--percent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto--percent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..4e5a07755
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--percent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for percent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--percent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--auto--percent-width-nonpercent-height.html
new file mode 100644
index 000000000..355985de9
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--percent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for percent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--percent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto--percent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..e25969033
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--percent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for percent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--percent-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--auto--percent-width-omitted-height.html
new file mode 100644
index 000000000..70471cd70
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--percent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for percent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--percent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto--percent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..2aac967a9
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--percent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for percent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto--percent-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--auto--percent-width-percent-height.html
new file mode 100644
index 000000000..7d119a372
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto--percent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto; for percent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..f8d3da2c3
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for nonpercent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-nonpercent-height.html
new file mode 100644
index 000000000..8bd16d110
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for nonpercent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..4573e583a
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for nonpercent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-omitted-height.html
new file mode 100644
index 000000000..e8b20f292
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for nonpercent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..5a1e405fb
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for nonpercent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-percent-height.html
new file mode 100644
index 000000000..4890bc5c7
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--nonpercent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for nonpercent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..1d37678e4
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for omitted-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-nonpercent-height.html
new file mode 100644
index 000000000..a58e491aa
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for omitted-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..12fe97541
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for omitted-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-omitted-height.html
new file mode 100644
index 000000000..0cc08fde1
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for omitted-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-percent-height-viewbox.html
new file mode 100644
index 000000000..13de26257
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for omitted-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-percent-height.html
new file mode 100644
index 000000000..d50223df6
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--omitted-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for omitted-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..1c5335349
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for percent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-nonpercent-height.html
new file mode 100644
index 000000000..9088fde48
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for percent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..8ff18c4a4
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for percent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-omitted-height.html
new file mode 100644
index 000000000..a80cfd5a6
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for percent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..a1edcd802
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for percent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-percent-height.html
new file mode 100644
index 000000000..9f0186a52
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--auto-32px--percent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: auto 32px; for percent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: auto 32px;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..e31e2e00c
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for nonpercent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-nonpercent-height.html
new file mode 100644
index 000000000..c3578b061
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for nonpercent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..2f96d08dd
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for nonpercent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-omitted-height.html
new file mode 100644
index 000000000..bfe7b0335
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for nonpercent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..d12e35c98
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for nonpercent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-percent-height.html
new file mode 100644
index 000000000..3e098fa36
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--nonpercent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for nonpercent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--omitted-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..11dc15435
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for omitted-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--omitted-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-nonpercent-height.html
new file mode 100644
index 000000000..0c4ed8af5
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for omitted-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--omitted-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..7183a07b9
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for omitted-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--omitted-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-omitted-height.html
new file mode 100644
index 000000000..b50a44294
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for omitted-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--omitted-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-percent-height-viewbox.html
new file mode 100644
index 000000000..b4dd27945
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for omitted-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--omitted-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-percent-height.html
new file mode 100644
index 000000000..642f26cc9
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--omitted-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for omitted-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--percent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--contain--percent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..80e338154
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--percent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for percent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--percent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--contain--percent-width-nonpercent-height.html
new file mode 100644
index 000000000..bf6a42b2a
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--percent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for percent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--percent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--contain--percent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..98ca31c88
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--percent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for percent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--percent-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--contain--percent-width-omitted-height.html
new file mode 100644
index 000000000..22325f270
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--percent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for percent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--percent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--contain--percent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..33cf37967
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--percent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for percent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--contain--percent-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--contain--percent-width-percent-height.html
new file mode 100644
index 000000000..2347d35d6
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--contain--percent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: contain; for percent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: contain;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..bab00d6b9
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for nonpercent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-nonpercent-height.html
new file mode 100644
index 000000000..ab7ecd975
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for nonpercent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..ba6395a0b
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for nonpercent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-omitted-height.html
new file mode 100644
index 000000000..c48b1c447
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for nonpercent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..e43de2570
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for nonpercent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-percent-height.html
new file mode 100644
index 000000000..70e1abce0
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--nonpercent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for nonpercent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(nonpercent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--omitted-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..6095500e1
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for omitted-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--omitted-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-nonpercent-height.html
new file mode 100644
index 000000000..8da880e77
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for omitted-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--omitted-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..328284f18
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for omitted-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--omitted-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-omitted-height.html
new file mode 100644
index 000000000..b26980359
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for omitted-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--omitted-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-percent-height-viewbox.html
new file mode 100644
index 000000000..395717870
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for omitted-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--omitted-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-percent-height.html
new file mode 100644
index 000000000..4133a7ba6
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--omitted-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for omitted-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(omitted-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--percent-width-nonpercent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--cover--percent-width-nonpercent-height-viewbox.html
new file mode 100644
index 000000000..3795b93e0
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--percent-width-nonpercent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for percent-width-nonpercent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--percent-width-nonpercent-height.html b/layout/reftests/backgrounds/vector/wide--cover--percent-width-nonpercent-height.html
new file mode 100644
index 000000000..fd75fedfa
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--percent-width-nonpercent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for percent-width-nonpercent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-nonpercent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--percent-width-omitted-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--cover--percent-width-omitted-height-viewbox.html
new file mode 100644
index 000000000..71d1ede86
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--percent-width-omitted-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for percent-width-omitted-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--percent-width-omitted-height.html b/layout/reftests/backgrounds/vector/wide--cover--percent-width-omitted-height.html
new file mode 100644
index 000000000..d38969ffc
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--percent-width-omitted-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for percent-width-omitted-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-omitted-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--percent-width-percent-height-viewbox.html b/layout/reftests/backgrounds/vector/wide--cover--percent-width-percent-height-viewbox.html
new file mode 100644
index 000000000..17da1912a
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--percent-width-percent-height-viewbox.html
@@ -0,0 +1,35 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for percent-width-percent-height-viewbox.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height-viewbox.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>
diff --git a/layout/reftests/backgrounds/vector/wide--cover--percent-width-percent-height.html b/layout/reftests/backgrounds/vector/wide--cover--percent-width-percent-height.html
new file mode 100644
index 000000000..f688223fb
--- /dev/null
+++ b/layout/reftests/backgrounds/vector/wide--cover--percent-width-percent-height.html
@@ -0,0 +1,34 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>wide background-size: cover; for percent-width-percent-height.svg</title>
+ <link rel="author" title="Jeff Walden" href="http://whereswalden.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-size" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing" />
+ <link rel="help" href="http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute" />
+ <meta name="flags" content="svg" />
+ <style type="text/css">
+div
+{
+ width: 768px; height: 256px;
+}
+#outer
+{
+ border: 1px solid black;
+}
+#inner
+{
+ background-image: url(percent-width-percent-height.svg);
+ background-repeat: no-repeat;
+ background-size: cover;
+}
+ </style>
+</head>
+<body>
+<div id="outer"><div id="inner"></div></div>
+</body>
+</html>