Revert "Roll IDL to multivm@910"

third_party/WebCore/workers/Worker.idl

 /*
  * Copyright (C) 2008, 2010 Apple Inc. All Rights Reserved.
  * Copyright (C) 2011 Google Inc. 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 25 matching lines @@
         ConstructorRaisesException,
         JSGenerateToNativeObject,
         JSGenerateToJSObject
     ] Worker : AbstractWorker {
 
         attribute EventListener onmessage;
 
 #if defined(LANGUAGE_JAVASCRIPT) && LANGUAGE_JAVASCRIPT
         [Custom] void postMessage(in SerializedScriptValue message, in [Optional] Array messagePorts)
             raises(DOMException);
-
-#if defined(ENABLE_LEGACY_VENDOR_PREFIXES) && ENABLE_LEGACY_VENDOR_PREFIXES
         [Custom] void webkitPostMessage(in SerializedScriptValue message, in [Optional] Array messagePorts)
             raises(DOMException);
-#endif // defined(ENABLE_LEGACY_VENDOR_PREFIXES) && ENABLE_LEGACY_VENDOR_PREFIXES
-
 #else
         // There's no good way to expose an array via the ObjC bindings, so for now just allow passing in a single port.
         void postMessage(in SerializedScriptValue message, in [Optional] MessagePort messagePort)
             raises(DOMException);
 #endif
 
         void terminate();
     };
 
 }