Removing "using" declarations that import names in the C++ Standard library.

Source/core/page/ScopedPageLoadDeferrer.cpp

 /*
  * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 11 matching lines @@
 #include "core/page/ScopedPageLoadDeferrer.h"
 
 #include "core/dom/Document.h"
 #include "core/frame/LocalFrame.h"
 #include "core/loader/FrameLoader.h"
 #include "core/page/Page.h"
 #include "wtf/HashSet.h"
 
 namespace WebCore {
 
-using namespace std;
-
 ScopedPageLoadDeferrer::ScopedPageLoadDeferrer(Page* exclusion)
 {
     const HashSet<Page*>& pages = Page::ordinaryPages();
 
     HashSet<Page*>::const_iterator end = pages.end();
     for (HashSet<Page*>::const_iterator it = pages.begin(); it != end; ++it) {
         Page* page = *it;
         if (page == exclusion || page->defersLoading())
             continue;
 
@@ skipping 26 matching lines @@
 
             for (Frame* frame = page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
                 if (frame->isLocalFrame())
                     toLocalFrame(frame)->document()->resumeScheduledTasks();
             }
         }
     }
 }
 
 } // namespace WebCore