CSSMediaRule and CSSSupportsRule inherit from CSSConditionRule

third_party/WebKit/Source/core/css/CSSSupportsRule.idl

Index: third_party/WebKit/Source/core/css/CSSSupportsRule.idl
diff --git a/third_party/WebKit/Source/core/css/CSSSupportsRule.idl b/third_party/WebKit/Source/core/css/CSSSupportsRule.idl
index ce57469bb99dcbc7c0d1bc9237686bb0b5c10371..778a66fd89517522f3e08a10755d0a8cbb681227 100644
--- a/third_party/WebKit/Source/core/css/CSSSupportsRule.idl
+++ b/third_party/WebKit/Source/core/css/CSSSupportsRule.idl
@@ -28,13 +28,5 @@
 
 // http://dev.w3.org/csswg/css-conditional/#the-csssupportsrule-interface
 
-// TODO(foolip): CSSSupportsRule should inherit from CSSConditionRule and
-// inherit all members.
-interface CSSSupportsRule : CSSRule {
-    // http://dev.w3.org/csswg/css-conditional/#the-cssconditionrule-interface
-    readonly attribute DOMString conditionText;
-    // http://dev.w3.org/csswg/cssom/#the-cssgroupingrule-interface
-    [SameObject] readonly attribute CSSRuleList cssRules;
-    [RaisesException] unsigned long insertRule(DOMString rule, unsigned long index);
-    [RaisesException] void deleteRule(unsigned long index);
+interface CSSSupportsRule : CSSConditionRule {
 };