Stop using WebCore namespace in generated code

Source/platform/audio/AudioSourceProvider.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 30 matching lines @@
 public:
     // provideInput() gets called repeatedly to render time-slices of a continuous audio stream.
     virtual void provideInput(AudioBus* bus, size_t framesToProcess) = 0;
 
     // If a client is set, we call it back when the audio format is available or changes.
     virtual void setClient(AudioSourceProviderClient*) { };
 
     virtual ~AudioSourceProvider() { }
 };
 
-} // WebCore
+} // namespace blink
 
 #endif // AudioSourceProvider_h