Moving GraphicsContext and dependencies from core to platform.

Source/core/frame/Frame.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 40 matching lines @@
 #include "core/frame/DOMWindow.h"
 #include "core/page/EventHandler.h"
 #include "core/page/FocusController.h"
 #include "core/frame/FrameDestructionObserver.h"
 #include "core/frame/FrameView.h"
 #include "core/page/Page.h"
 #include "core/page/Settings.h"
 #include "core/frame/animation/AnimationController.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
 #include "core/platform/DragImage.h"
-#include "core/platform/graphics/GraphicsContext.h"
-#include "core/platform/graphics/ImageBuffer.h"
 #include "core/rendering/HitTestResult.h"
 #include "core/rendering/RenderLayerCompositor.h"
 #include "core/rendering/RenderPart.h"
 #include "core/rendering/RenderView.h"
 #include "core/svg/SVGDocument.h"
+#include "platform/graphics/GraphicsContext.h"
+#include "platform/graphics/ImageBuffer.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefCountedLeakCounter.h"
 #include "wtf/StdLibExtras.h"
 
 using namespace std;
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
@@ skipping 617 matching lines @@
     if (!m_page)
         return 0;
 
     double ratio = m_page->deviceScaleFactor();
     if (RuntimeEnabledFeatures::devicePixelRatioIncludesZoomEnabled())
         ratio *= pageZoomFactor();
     return ratio;
 }
 
 } // namespace WebCore