Cleanup namespace usage in Source/web/Web[I-Z]*.cpp

Source/web/WebPluginDocument.cpp

 /*
  * Copyright (C) 2010 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 20 matching lines @@
 #include "config.h"
 #include "public/web/WebPluginDocument.h"
 
 #include "core/dom/Document.h"
 #include "core/html/PluginDocument.h"
 
 #include "web/WebPluginContainerImpl.h"
 
 #include "wtf/PassRefPtr.h"
 
-using namespace blink;
 
 namespace blink {
 
 
 WebPlugin* WebPluginDocument::plugin()
 {
     if (!isPluginDocument())
         return 0;
     PluginDocument* doc = unwrap<PluginDocument>();
     WebPluginContainerImpl* container = toWebPluginContainerImpl(doc->pluginWidget());
@@ skipping 11 matching lines @@
     m_private = elem;
     return *this;
 }
 
 WebPluginDocument::operator PassRefPtrWillBeRawPtr<PluginDocument>() const
 {
     return static_cast<PluginDocument*>(m_private.get());
 }
 
 } // namespace blink