Explore the possibility of implementing the CSS Region interface.

Source/core/css/CSSRegion.idl

Index: Source/core/css/CSSRegion.idl
diff --git a/Source/core/css/WebKitCSSFilterRule.idl b/Source/core/css/CSSRegion.idl
similarity index 85%
copy from Source/core/css/WebKitCSSFilterRule.idl
copy to Source/core/css/CSSRegion.idl
index 09a3176335906a3747d3a10995710e82e0225207..7183752ec928fe21d821b0fbe1c76a2af8658b6a 100644
--- a/Source/core/css/WebKitCSSFilterRule.idl
+++ b/Source/core/css/CSSRegion.idl
@@ -28,9 +28,8 @@
  */
 
 [
-    ImplementedAs=CSSFilterRule
-] interface WebKitCSSFilterRule : CSSRule {
-    readonly attribute CSSStyleDeclaration style;
-
-    // FIXME: We should expose the filter name once the CSSOM for the @filter rule is specified.
-};
+    NoInterfaceObject
+] interface CSSRegion {
+    [PerWorldBindings] readonly attribute DOMString webkitRegionOverset;

[abarth-chromium, 2013/10/30 16:38:20]

There's no need for per-world bindings here.

[abucur, 2013/11/15 07:15:14]

I think it was in the Element definition and I didn't change it when I took the
attribute out of there. I'll remove it in the implementation.

+    sequence<Range> webkitGetRegionFlowRanges();
+};