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

public/platform/WebSpeechSynthesisVoice.h

 /*
  * Copyright (C) 2013 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:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  */
 
 #ifndef WebSpeechSynthesisVoice_h
 #define WebSpeechSynthesisVoice_h
 
 #include "WebCommon.h"
 #include "WebPrivatePtr.h"
 #include "WebString.h"
 
 namespace blink {
+
 class PlatformSpeechSynthesisVoice;
-}
-
-namespace blink {
 
 class WebSpeechSynthesisVoice {
 public:
     BLINK_PLATFORM_EXPORT WebSpeechSynthesisVoice();
     WebSpeechSynthesisVoice(const WebSpeechSynthesisVoice& other) { assign(other); }
     ~WebSpeechSynthesisVoice() { reset(); }
 
     WebSpeechSynthesisVoice& operator=(const WebSpeechSynthesisVoice& other)
     {
         assign(other);
         return *this;
     }
 
     BLINK_PLATFORM_EXPORT void assign(const WebSpeechSynthesisVoice&);
     BLINK_PLATFORM_EXPORT void reset();
 
     BLINK_PLATFORM_EXPORT void setVoiceURI(const WebString&);
     BLINK_PLATFORM_EXPORT void setName(const WebString&);
     BLINK_PLATFORM_EXPORT void setLanguage(const WebString&);
     BLINK_PLATFORM_EXPORT void setIsLocalService(bool);
     BLINK_PLATFORM_EXPORT void setIsDefault(bool);
 
 #if INSIDE_BLINK
-    BLINK_PLATFORM_EXPORT operator blink::PlatformSpeechSynthesisVoice*() const;
+    BLINK_PLATFORM_EXPORT operator PlatformSpeechSynthesisVoice*() const;
 #endif
 
 private:
-    WebPrivatePtr<blink::PlatformSpeechSynthesisVoice> m_private;
+    WebPrivatePtr<PlatformSpeechSynthesisVoice> m_private;
 };
 
 } // namespace blink
 
 #endif // WebSpeechSynthesisVoice_h