Cleanup namespace usage in Source/core/modules/[mediasource/* to websockets/*]

Source/modules/mediastream/RTCDataChannel.h

Index: Source/modules/mediastream/RTCDataChannel.h
diff --git a/Source/modules/mediastream/RTCDataChannel.h b/Source/modules/mediastream/RTCDataChannel.h
index 5ab942268cbd8d5399284097bedaf545c87b7cfe..ef9ba146279bcee66d4f7173f4a55af456b44189 100644
--- a/Source/modules/mediastream/RTCDataChannel.h
+++ b/Source/modules/mediastream/RTCDataChannel.h
@@ -32,26 +32,23 @@
 #include "public/platform/WebRTCDataChannelHandlerClient.h"
 
 namespace blink {
-class WebRTCDataChannelHandler;
-class WebRTCPeerConnectionHandler;
-struct WebRTCDataChannelInit;
-}
-
-namespace blink {
 
 class Blob;
 class ExceptionState;
 class RTCPeerConnection;
+class WebRTCDataChannelHandler;
+class WebRTCPeerConnectionHandler;
+struct WebRTCDataChannelInit;
 
 class RTCDataChannel FINAL
     : public RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<RTCDataChannel>
     , public EventTargetWithInlineData
-    , public blink::WebRTCDataChannelHandlerClient {
+    , public WebRTCDataChannelHandlerClient {
     DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<RTCDataChannel>);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(RTCDataChannel);
 public:
-    static RTCDataChannel* create(ExecutionContext*, RTCPeerConnection*, PassOwnPtr<blink::WebRTCDataChannelHandler>);
-    static RTCDataChannel* create(ExecutionContext*, RTCPeerConnection*, blink::WebRTCPeerConnectionHandler*, const String& label, const blink::WebRTCDataChannelInit&, ExceptionState&);
+    static RTCDataChannel* create(ExecutionContext*, RTCPeerConnection*, PassOwnPtr<WebRTCDataChannelHandler>);
+    static RTCDataChannel* create(ExecutionContext*, RTCPeerConnection*, WebRTCPeerConnectionHandler*, const String& label, const WebRTCDataChannelInit&, ExceptionState&);
     virtual ~RTCDataChannel();
 
     String label() const;
@@ -93,24 +90,24 @@ public:
     virtual void trace(Visitor*) OVERRIDE;
 
 private:
-    RTCDataChannel(ExecutionContext*, RTCPeerConnection*, PassOwnPtr<blink::WebRTCDataChannelHandler>);
+    RTCDataChannel(ExecutionContext*, RTCPeerConnection*, PassOwnPtr<WebRTCDataChannelHandler>);
 
     void scheduleDispatchEvent(PassRefPtrWillBeRawPtr<Event>);
     void scheduledEventTimerFired(Timer<RTCDataChannel>*);
 
     ExecutionContext* m_executionContext;
 
-    // blink::WebRTCDataChannelHandlerClient
-    virtual void didChangeReadyState(blink::WebRTCDataChannelHandlerClient::ReadyState) OVERRIDE;
-    virtual void didReceiveStringData(const blink::WebString&) OVERRIDE;
+    // WebRTCDataChannelHandlerClient
+    virtual void didChangeReadyState(WebRTCDataChannelHandlerClient::ReadyState) OVERRIDE;
+    virtual void didReceiveStringData(const WebString&) OVERRIDE;
     virtual void didReceiveRawData(const char*, size_t) OVERRIDE;
     virtual void didDetectError() OVERRIDE;
 
-    OwnPtr<blink::WebRTCDataChannelHandler> m_handler;
+    OwnPtr<WebRTCDataChannelHandler> m_handler;
 
     bool m_stopped;
 
-    blink::WebRTCDataChannelHandlerClient::ReadyState m_readyState;
+    WebRTCDataChannelHandlerClient::ReadyState m_readyState;
 
     enum BinaryType {
         BinaryTypeBlob,