Issue #1620 - Use Intrinsic Aspect Ratio for Images

https://bugzilla.mozilla.org/show_bug.cgi?id=1547231
https://bugzilla.mozilla.org/show_bug.cgi?id=1559094
https://bugzilla.mozilla.org/show_bug.cgi?id=1633434
https://bugzilla.mozilla.org/show_bug.cgi?id=1565690
https://bugzilla.mozilla.org/show_bug.cgi?id=1602047

Make use of Aspect Ratios in Image frames before Images are loaded.
- Check for width and height HTML properties and create a ratio with them.
- Overwrite HTML size values with actual image dimensions on load.
- Collapse any frames with srcless images.

Comments:
dom/html/nsGenericHTMLElement.cpp:1483
layout/generic/nsImageFrame.cpp:289

1 files changed, 3 insertions, 1 deletions

diff --git a/dom/html/nsGenericHTMLElement.h b/dom/html/nsGenericHTMLElement.h
index c9169df11..8412ea0dc 100644
--- a/dom/html/nsGenericHTMLElement.h
+++ b/dom/html/nsGenericHTMLElement.h
@@ -702,10 +702,12 @@ public:
    *
    * @param aAttributes the list of attributes to map
    * @param aData the returned rule data [INOUT]
+   * @param aMapAspectRatio map width and height attributes on aspect-ratio
    * @see GetAttributeMappingFunction
    */
   static void MapImageSizeAttributesInto(const nsMappedAttributes* aAttributes,
-                                         nsRuleData* aData);
+                                         nsRuleData* aData,
+                                         bool = false);
   /**
    * Helper to map the background attribute
    * into a style struct.