Cleanup namespace usage from animation to exported in platform/

Source/platform/audio/ReverbConvolver.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 22 matching lines @@
 #include "platform/audio/DirectConvolver.h"
 #include "platform/audio/FFTConvolver.h"
 #include "platform/audio/ReverbAccumulationBuffer.h"
 #include "platform/audio/ReverbConvolverStage.h"
 #include "platform/audio/ReverbInputBuffer.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/Vector.h"
 
 namespace blink {
-class WebThread;
-}
-
-namespace blink {
 
 class AudioChannel;
+class WebThread;
 
 class PLATFORM_EXPORT ReverbConvolver {
     WTF_MAKE_NONCOPYABLE(ReverbConvolver);
 public:
     // maxFFTSize can be adjusted (from say 2048 to 32768) depending on how much precision is necessary.
     // For certain tweaky de-convolving applications the phase errors add up quickly and lead to non-sensical results with
     // larger FFT sizes and single-precision floats.  In these cases 2048 is a good size.
     // If not doing multi-threaded convolution, then should not go > 8192.
     ReverbConvolver(AudioChannel* impulseResponse, size_t renderSliceSize, size_t maxFFTSize, size_t convolverRenderPhase, bool useBackgroundThreads);
     ~ReverbConvolver();
@@ skipping 17 matching lines @@
     ReverbInputBuffer m_inputBuffer;
 
     // First stage will be of size m_minFFTSize.  Each next stage will be twice as big until we hit m_maxFFTSize.
     size_t m_minFFTSize;
     size_t m_maxFFTSize;
 
     // But don't exceed this size in the real-time thread (if we're doing background processing).
     size_t m_maxRealtimeFFTSize;
 
     // Background thread and synchronization
-    OwnPtr<blink::WebThread> m_backgroundThread;
+    OwnPtr<WebThread> m_backgroundThread;
 };
 
 } // namespace blink
 
 #endif // ReverbConvolver_h