Add WebKit prefix to MediaSource,SourceBuffer, and SourceBufferList objects.

Source/WebKit/chromium/src/WebMediaSourceImpl.cpp

 /*
  * 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
@@ skipping 19 matching lines @@
 
 #include "config.h"
 #include "WebMediaSourceImpl.h"
 
 #include "MediaSourcePrivateImpl.h"
 #include "WebMediaSourceClient.h"
 
 namespace WebKit {
 
 
-WebMediaSourceImpl::WebMediaSourceImpl(PassRefPtr<WebCore::MediaSource> mediaSource)
+WebMediaSourceImpl::WebMediaSourceImpl(PassRefPtr<WebCore::WebKitMediaSource> mediaSource)
 {
     m_mediaSource = mediaSource;
 }
 
 WebMediaSourceImpl::~WebMediaSourceImpl()
 {
 }
 
 
 void WebMediaSourceImpl::open(WebMediaSourceClient* client)
 {
     ASSERT(client);
     m_mediaSource->setPrivateAndOpen(adoptPtr(new MediaSourcePrivateImpl(adoptPtr(client))));
 }
 
 }