Add m-esr52 at 52.6.0

1 files changed, 36 insertions, 0 deletions

diff --git a/layout/reftests/xul/inactive-fixed-bg-bug1272525.xul b/layout/reftests/xul/inactive-fixed-bg-bug1272525.xul
new file mode 100644
index 000000000..81f2e9f8c
--- /dev/null
+++ b/layout/reftests/xul/inactive-fixed-bg-bug1272525.xul
@@ -0,0 +1,36 @@
+<?xml version="1.0"?>
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+  <!-- Test that a fixed background layer inside an inactive layer tree
+       is clipped correctly. Here, the inactive layer tree is created by
+       the SVGEffects display item built for the clip-path on the outer div.
+       The bug only reproduces in XUL because fixed backgrounds are only
+       layerized if their animated geometry root is the root frame, but
+       in HTML there's always an enclosing HTML scroll frame. -->
+  <style xmlns="http://www.w3.org/1999/xhtml"><![CDATA[
+    #inner {
+      width: 100px;
+      height: 100px;
+      background: linear-gradient(red, blue) no-repeat fixed;
+      background-size: 800px 800px;
+    }
+
+    #outer {
+      margin: 50px 50px 0;
+      width: 100px;
+      height: 200px;
+      clip-path: url(#path);
+      position: fixed;
+    }
+  ]]></style>
+  <div xmlns="http://www.w3.org/1999/xhtml" id="outer">
+    <div xmlns="http://www.w3.org/1999/xhtml" id="inner"></div>
+  </div>
+
+  <svg xmlns="http://www.w3.org/2000/svg" height="0">
+    <defs>
+      <clipPath id="path" clipPathUnits="objectBoundingBox">
+        <polygon points="0.25,0.25 0.25,0.75 0.75,0.75 0.75,0.25"/>
+      </clipPath>
+    </defs>
+  </svg>
+</window>