Stop using [InterfaceName] in CSS IDL files

Source/core/css/WebKitCSSKeyframesRule.idl

Index: Source/core/css/WebKitCSSKeyframesRule.idl
diff --git a/Source/core/css/CSSKeyframesRule.idl b/Source/core/css/WebKitCSSKeyframesRule.idl
similarity index 88%
rename from Source/core/css/CSSKeyframesRule.idl
rename to Source/core/css/WebKitCSSKeyframesRule.idl
index 873e75660d3cd3dc2a38f2c82511619d5abec472..5fdc800ce078be104afb6fca48f9837075a11f3f 100644
--- a/Source/core/css/CSSKeyframesRule.idl
+++ b/Source/core/css/WebKitCSSKeyframesRule.idl
@@ -28,15 +28,15 @@
 
 // Introduced in DOM Level ?:
 [
-    InterfaceName=WebKitCSSKeyframesRule
-] interface CSSKeyframesRule : CSSRule {
+    ImplementedAs=CSSKeyframesRule
+] interface WebKitCSSKeyframesRule : CSSRule {
 
     [TreatReturnedNullStringAs=Null, TreatNullAs=NullString] attribute DOMString name;
     readonly attribute CSSRuleList cssRules;
     
-    [ImplementedAs=item, NotEnumerable] getter CSSKeyframeRule(unsigned long index);
+    [ImplementedAs=item, NotEnumerable] getter WebKitCSSKeyframeRule(unsigned long index);
     void insertRule([Default=Undefined] optional DOMString rule);
     void deleteRule([Default=Undefined] optional DOMString key);
-    CSSKeyframeRule findRule([Default=Undefined] optional DOMString key);
+    WebKitCSSKeyframeRule findRule([Default=Undefined] optional DOMString key);
 };