Remove [InterfaceName] IDL attribute

Source/core/dom/WebKitNamedFlowCollection.idl

 /*
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 15 matching lines @@
  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 [
     NoInterfaceObject,
     EnabledAtRuntime=cssRegions,
     ImplementedAs=DOMNamedFlowCollection
 ] interface WebKitNamedFlowCollection {
     readonly attribute unsigned long length;
-    getter NamedFlow item(unsigned long index);
-    NamedFlow namedItem(DOMString name);
-    [NotEnumerable, ImplementedAs=namedItem] getter NamedFlow (DOMString name);
+    getter WebKitNamedFlow item(unsigned long index);
+    WebKitNamedFlow namedItem(DOMString name);
+    [NotEnumerable, ImplementedAs=namedItem] getter WebKitNamedFlow (DOMString name);
 };