Stop using WebCore namespace in generated code

Source/platform/audio/AudioIOCallback.h

 /*
  * Copyright (C) 2012 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 @@
 // Abstract base-class for isochronous audio I/O client.
 class AudioIOCallback {
 public:
     // render() is called periodically to get the next render quantum of audio into destinationBus.
     // Optional audio input is given in sourceBus (if it's not 0).
     virtual void render(AudioBus* sourceBus, AudioBus* destinationBus, size_t framesToProcess) = 0;
 
     virtual ~AudioIOCallback() { }
 };
 
-} // WebCore
+} // namespace blink
 
 #endif // AudioIOCallback_h