Cleanup namespace usage in Source/web[A-V]*.cpp

Source/web/FullscreenController.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 24 matching lines @@
 #include "core/dom/FullscreenElementStack.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/HTMLMediaElement.h"
 #include "platform/LayoutTestSupport.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "public/web/WebFrame.h"
 #include "public/web/WebViewClient.h"
 #include "web/WebSettingsImpl.h"
 #include "web/WebViewImpl.h"
 
-using namespace blink;
-
 namespace blink {
 
 PassOwnPtr<FullscreenController> FullscreenController::create(WebViewImpl* webViewImpl)
 {
     return adoptPtr(new FullscreenController(webViewImpl));
 }
 
 FullscreenController::FullscreenController(WebViewImpl* webViewImpl)
     : m_webViewImpl(webViewImpl)
     , m_exitFullscreenPageScaleFactor(0)
@@ skipping 89 matching lines @@
                 }
 
                 fullscreen->didExitFullScreenForElement(0);
             }
         }
     }
 
     m_fullScreenFrame.clear();
 }
 
-void FullscreenController::enterFullScreenForElement(blink::Element* element)
+void FullscreenController::enterFullScreenForElement(Element* element)
 {
     // We are already transitioning to fullscreen for a different element.
     if (m_provisionalFullScreenElement) {
         m_provisionalFullScreenElement = element;
         return;
     }
 
     // We are already in fullscreen mode.
     if (m_fullScreenFrame) {
         m_provisionalFullScreenElement = element;
         willEnterFullScreen();
         didEnterFullScreen();
         return;
     }
 
     // We need to transition to fullscreen mode.
     if (WebViewClient* client = m_webViewImpl->client()) {
         if (client->enterFullScreen())
             m_provisionalFullScreenElement = element;
     }
 }
 
-void FullscreenController::exitFullScreenForElement(blink::Element* element)
+void FullscreenController::exitFullScreenForElement(Element* element)
 {
     // The client is exiting full screen, so don't send a notification.
     if (m_isCancelingFullScreen)
         return;
     if (WebViewClient* client = m_webViewImpl->client())
         client->exitFullScreen();
 }
 
-}
+} // namespace blink