Cleanup namespace usage in Source/web/.

Source/web/WebAXObject.cpp

 /*
  * Copyright (C) 2009 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 36 matching lines @@
 #include "core/rendering/style/RenderStyle.h"
 #include "platform/PlatformKeyboardEvent.h"
 #include "public/platform/WebPoint.h"
 #include "public/platform/WebRect.h"
 #include "public/platform/WebString.h"
 #include "public/platform/WebURL.h"
 #include "public/web/WebDocument.h"
 #include "public/web/WebNode.h"
 #include "wtf/text/StringBuilder.h"
 
-using namespace blink;
-
 namespace blink {
 
 #if ENABLE(ASSERT)
 // It's not safe to call some WebAXObject APIs if a layout is pending.
 // Clients should call updateLayoutAndCheckValidity first.
 static bool isLayoutClean(Document* document)
 {
     if (!document || !document->view())
         return false;
     return document->lifecycle().state() >= DocumentLifecycle::LayoutClean
@@ skipping 1088 matching lines @@
     m_private = object;
     return *this;
 }
 
 WebAXObject::operator WTF::PassRefPtr<AXObject>() const
 {
     return m_private.get();
 }
 
 } // namespace blink