Cleanup redundant namespace usage in Source/platform

Source/platform/speech/PlatformSpeechSynthesizer.h

 /*
  * Copyright (C) 2013 Apple Computer, 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 14 matching lines @@
 
 #ifndef PlatformSpeechSynthesizer_h
 #define PlatformSpeechSynthesizer_h
 
 #include "platform/PlatformExport.h"
 #include "platform/heap/Handle.h"
 #include "platform/speech/PlatformSpeechSynthesisVoice.h"
 #include "wtf/Vector.h"
 
 namespace blink {
-class WebSpeechSynthesizer;
-class WebSpeechSynthesizerClient;
-}
-
-namespace blink {
 
 enum SpeechBoundary {
     SpeechWordBoundary,
     SpeechSentenceBoundary
 };
 
 class PlatformSpeechSynthesisUtterance;
+class WebSpeechSynthesizer;
+class WebSpeechSynthesizerClient;
 class WebSpeechSynthesizerClientImpl;
 
 class PlatformSpeechSynthesizerClient : public GarbageCollectedMixin {
 public:
     virtual void didStartSpeaking(PlatformSpeechSynthesisUtterance*) = 0;
     virtual void didFinishSpeaking(PlatformSpeechSynthesisUtterance*) = 0;
     virtual void didPauseSpeaking(PlatformSpeechSynthesisUtterance*) = 0;
     virtual void didResumeSpeaking(PlatformSpeechSynthesisUtterance*) = 0;
     virtual void speakingErrorOccurred(PlatformSpeechSynthesisUtterance*) = 0;
     virtual void boundaryEventOccurred(PlatformSpeechSynthesisUtterance*, SpeechBoundary, unsigned charIndex) = 0;
@@ skipping 25 matching lines @@
 protected:
     explicit PlatformSpeechSynthesizer(PlatformSpeechSynthesizerClient*);
 
     virtual void initializeVoiceList();
 
     HeapVector<Member<PlatformSpeechSynthesisVoice> > m_voiceList;
 
 private:
     Member<PlatformSpeechSynthesizerClient> m_speechSynthesizerClient;
 
-    OwnPtr<blink::WebSpeechSynthesizer> m_webSpeechSynthesizer;
-    Member<blink::WebSpeechSynthesizerClientImpl> m_webSpeechSynthesizerClient;
+    OwnPtr<WebSpeechSynthesizer> m_webSpeechSynthesizer;
+    Member<WebSpeechSynthesizerClientImpl> m_webSpeechSynthesizerClient;
 };
 
 } // namespace blink
 
 #endif // PlatformSpeechSynthesizer_h