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

Source/core/frame/LocalFrame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 48 matching lines @@
 #include "core/rendering/RenderView.h"
 #include "core/rendering/compositing/RenderLayerCompositor.h"
 #include "core/svg/SVGDocumentExtensions.h"
 #include "platform/DragImage.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/ImageBuffer.h"
 #include "platform/text/TextStream.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/StdLibExtras.h"
 
-using namespace std;
-
 namespace WebCore {
 
 using namespace HTMLNames;
 
 static inline float parentPageZoomFactor(LocalFrame* frame)
 {
     Frame* parent = frame->tree().parent();
     if (!parent || !parent->isLocalFrame())
         return 1;
     return toLocalFrame(parent)->pageZoomFactor();
@@ skipping 95 matching lines @@
         return;
     window->dispatchEvent(Event::create(EventTypeNames::orientationchange));
 
     // Notify subframes.
     Vector<RefPtr<LocalFrame> > childFrames;
     for (Frame* child = tree().firstChild(); child; child = child->tree().nextSibling()) {
         if (child->isLocalFrame())
             childFrames.append(toLocalFrame(child));
     }
 
-    for (size_t i = 0; i < childFrames.size(); ++i)
+    for (std::size_t i = 0; i < childFrames.size(); ++i)
         childFrames[i]->sendOrientationChangeEvent();
 }
 
 void LocalFrame::setPrinting(bool printing, const FloatSize& pageSize, const FloatSize& originalPageSize, float maximumShrinkRatio)
 {
     // In setting printing, we should not validate resources already cached for the document.
     // See https://bugs.webkit.org/show_bug.cgi?id=43704
     ResourceCacheValidationSuppressor validationSuppressor(document()->fetcher());
 
     document()->setPrinting(printing);
@@ skipping 53 matching lines @@
 {
     if (document())
         document()->didChangeVisibilityState();
 
     Vector<RefPtr<LocalFrame> > childFrames;
     for (Frame* child = tree().firstChild(); child; child = child->tree().nextSibling()) {
         if (child->isLocalFrame())
             childFrames.append(toLocalFrame(child));
     }
 
-    for (size_t i = 0; i < childFrames.size(); ++i)
+    for (std::size_t i = 0; i < childFrames.size(); ++i)
         childFrames[i]->didChangeVisibilityState();
 }
 
 void LocalFrame::willDetachFrameHost()
 {
     // We should never be detatching the page during a Layout.
     RELEASE_ASSERT(!m_view || !m_view->isInPerformLayout());
 
     Frame* parent = tree().parent();
     if (parent && parent->isLocalFrame())
@@ skipping 385 matching lines @@
 LocalFrame* LocalFrame::localFrameRoot()
 {
     LocalFrame* curFrame = this;
     while (curFrame && curFrame->tree().parent() && curFrame->tree().parent()->isLocalFrame())
         curFrame = toLocalFrame(curFrame->tree().parent());
 
     return curFrame;
 }
 
 } // namespace WebCore