Cleanup namespace usage in public/platform/{Web[P-W]*,linux/*}.h

public/platform/WebRTCStatsResponse.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
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 12 matching lines @@
  */
 
 #ifndef WebRTCStatsResponse_h
 #define WebRTCStatsResponse_h
 
 #include "WebCommon.h"
 #include "WebPrivatePtr.h"
 #include "WebString.h"
 
 namespace blink {
+
 class RTCStatsResponseBase;
-}
-
-namespace blink {
 
 class WebRTCStatsResponse {
 public:
     WebRTCStatsResponse(const WebRTCStatsResponse& other) { assign(other); }
     WebRTCStatsResponse() { }
     ~WebRTCStatsResponse() { reset(); }
 
     WebRTCStatsResponse& operator=(const WebRTCStatsResponse& other)
     {
         assign(other);
         return *this;
     }
 
     BLINK_PLATFORM_EXPORT void assign(const WebRTCStatsResponse&);
 
     BLINK_PLATFORM_EXPORT void reset();
 
     BLINK_PLATFORM_EXPORT size_t addReport(const WebString& id, const WebString& type, double timestamp);
     BLINK_PLATFORM_EXPORT void addStatistic(size_t report, const WebString& name, const WebString& value);
 
 #if INSIDE_BLINK
-    BLINK_PLATFORM_EXPORT WebRTCStatsResponse(blink::RTCStatsResponseBase*);
-    BLINK_PLATFORM_EXPORT operator blink::RTCStatsResponseBase*() const;
+    BLINK_PLATFORM_EXPORT WebRTCStatsResponse(RTCStatsResponseBase*);
+    BLINK_PLATFORM_EXPORT operator RTCStatsResponseBase*() const;
 #endif
 
 private:
-    WebPrivatePtr<blink::RTCStatsResponseBase> m_private;
+    WebPrivatePtr<RTCStatsResponseBase> m_private;
 };
 
 } // namespace blink
 
 #endif // WebRTCStatsResponse_h