Cleanup namespace usage in public/platform/Web[A-M]*.h.

public/platform/WebMediaStreamSource.h

Index: public/platform/WebMediaStreamSource.h
diff --git a/public/platform/WebMediaStreamSource.h b/public/platform/WebMediaStreamSource.h
index 9d8b2d30b96f5d94e910cdaa14690580a00bda7f..58692287a9b053c1c168ca058d7ecd6d8fdf621f 100644
--- a/public/platform/WebMediaStreamSource.h
+++ b/public/platform/WebMediaStreamSource.h
@@ -37,10 +37,8 @@
 #include "WebVector.h"
 
 namespace blink {
-class MediaStreamSource;
-}
 
-namespace blink {
+class MediaStreamSource;
 class WebAudioDestinationConsumer;
 class WebMediaConstraints;
 class WebString;
@@ -55,11 +53,11 @@ public:
         BLINK_PLATFORM_EXPORT WebMediaStreamSource owner();
 
 #if INSIDE_BLINK
-        BLINK_PLATFORM_EXPORT void setOwner(blink::MediaStreamSource*);
+        BLINK_PLATFORM_EXPORT void setOwner(MediaStreamSource*);
 #endif
 
     private:
-        blink::MediaStreamSource* m_owner;
+        MediaStreamSource* m_owner;
     };
 
     enum Type {
@@ -113,14 +111,14 @@ public:
     BLINK_PLATFORM_EXPORT bool removeAudioConsumer(WebAudioDestinationConsumer*);
 
 #if INSIDE_BLINK
-    BLINK_PLATFORM_EXPORT WebMediaStreamSource(const WTF::PassRefPtr<blink::MediaStreamSource>&);
-    BLINK_PLATFORM_EXPORT WebMediaStreamSource& operator=(blink::MediaStreamSource*);
-    BLINK_PLATFORM_EXPORT operator WTF::PassRefPtr<blink::MediaStreamSource>() const;
-    BLINK_PLATFORM_EXPORT operator blink::MediaStreamSource*() const;
+    BLINK_PLATFORM_EXPORT WebMediaStreamSource(const WTF::PassRefPtr<MediaStreamSource>&);
+    BLINK_PLATFORM_EXPORT WebMediaStreamSource& operator=(MediaStreamSource*);
+    BLINK_PLATFORM_EXPORT operator WTF::PassRefPtr<MediaStreamSource>() const;
+    BLINK_PLATFORM_EXPORT operator MediaStreamSource*() const;
 #endif
 
 private:
-    WebPrivatePtr<blink::MediaStreamSource> m_private;
+    WebPrivatePtr<MediaStreamSource> m_private;
 };
 
 } // namespace blink