Cleanup namespace usage from animation to exported in platform/

Source/platform/audio/HRTFDatabaseLoader.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 65 matching lines @@
     // Map from sample-rate to loader.
     typedef HashMap<double, HRTFDatabaseLoader*> LoaderMap;
 
     // Keeps track of loaders on a per-sample-rate basis.
     static LoaderMap* s_loaderMap; // singleton
 
     OwnPtr<HRTFDatabase> m_hrtfDatabase;
 
     // Holding a m_threadLock is required when accessing m_databaseLoaderThread since we access it from multiple threads.
     Mutex m_threadLock;
-    OwnPtr<blink::WebThread> m_databaseLoaderThread;
+    OwnPtr<WebThread> m_databaseLoaderThread;
 
     float m_databaseSampleRate;
 };
 
 } // namespace blink
 
 #endif // HRTFDatabaseLoader_h