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

Source/web/PageWidgetDelegate.cpp

 /*
  * Copyright (C) 2012 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 26 matching lines @@
 #include "core/page/EventHandler.h"
 #include "core/page/Page.h"
 #include "core/rendering/RenderView.h"
 #include "core/rendering/compositing/RenderLayerCompositor.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "public/web/WebInputEvent.h"
 #include "web/PageOverlayList.h"
 #include "web/WebInputEventConversion.h"
 #include "wtf/CurrentTime.h"
 
-using namespace blink;
-
 namespace blink {
 
 static inline FrameView* mainFrameView(Page* page)
 {
     if (!page)
         return 0;
     // FIXME: Can we remove this check?
     if (!page->mainFrame())
         return 0;
     if (!page->mainFrame()->isLocalFrame())
@@ skipping 152 matching lines @@
 bool PageWidgetEventHandler::handleMouseWheel(LocalFrame& mainFrame, const WebMouseWheelEvent& event)
 {
     return mainFrame.eventHandler().handleWheelEvent(PlatformWheelEventBuilder(mainFrame.view(), event));
 }
 
 bool PageWidgetEventHandler::handleTouchEvent(LocalFrame& mainFrame, const WebTouchEvent& event)
 {
     return mainFrame.eventHandler().handleTouchEvent(PlatformTouchEventBuilder(mainFrame.view(), event));
 }
 
-}
+} // namespace blink