Remove Webkit prefix for RequestAnimationFrame.

lib/html/dart2js/html_dart2js.dart

Index: lib/html/dart2js/html_dart2js.dart
===================================================================
--- lib/html/dart2js/html_dart2js.dart	(revision 12738)
+++ lib/html/dart2js/html_dart2js.dart	(working copy)
@@ -37927,10 +37927,10 @@
   void stop();
 
   /** @domName DOMWindow.webkitCancelAnimationFrame */
-  void webkitCancelAnimationFrame(int id);
+  void cancelAnimationFrame(int id);
 
   /** @domName DOMWindow.webkitCancelRequestAnimationFrame */
-  void webkitCancelRequestAnimationFrame(int id);
+  void cancelRequestAnimationFrame(int id);
 
   /** @domName DOMWindow.webkitConvertPointFromNodeToPage */
   Point webkitConvertPointFromNodeToPage(Node node, Point p);
@@ -37942,7 +37942,7 @@
   void webkitPostMessage(/*SerializedScriptValue*/ message, String targetOrigin, [List transferList]);
 
   /** @domName DOMWindow.webkitRequestAnimationFrame */
-  int webkitRequestAnimationFrame(RequestAnimationFrameCallback callback);
+  int requestAnimationFrame(RequestAnimationFrameCallback callback);
 
   /** @domName DOMWindow.webkitRequestFileSystem */
   void webkitRequestFileSystem(int type, int size, FileSystemCallback successCallback, [ErrorCallback errorCallback]);
@@ -38410,9 +38410,9 @@
 
   void stop() native;
 
-  void webkitCancelAnimationFrame(int id) native;
+  void cancelAnimationFrame(int id) native "webkitCancelAnimationFrame";
 
-  void webkitCancelRequestAnimationFrame(int id) native;
+  void cancelRequestAnimationFrame(int id) native "webkitCancelRequestAnimationFrame";
 
   _PointImpl webkitConvertPointFromNodeToPage(_NodeImpl node, _PointImpl p) native;
 
@@ -38420,7 +38420,7 @@
 
   void webkitPostMessage(message, String targetOrigin, [List transferList]) native;
 
-  int webkitRequestAnimationFrame(RequestAnimationFrameCallback callback) native;
+  int requestAnimationFrame(RequestAnimationFrameCallback callback) native "webkitRequestAnimationFrame";
 
   void webkitRequestFileSystem(int type, int size, FileSystemCallback successCallback, [ErrorCallback errorCallback]) native;