Stop using WebCore namespace in generated code

Source/platform/audio/AudioChannel.h

 /*
  * Copyright (C) 2010 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 117 matching lines @@
     float maxAbsValue() const;
 
 private:
     size_t m_length;
 
     float* m_rawPointer;
     OwnPtr<AudioFloatArray> m_memBuffer;
     bool m_silent;
 };
 
-} // WebCore
+} // namespace blink
 
 #endif // AudioChannel_h