Moving GraphicsContext and dependencies from core to platform.

Source/core/dom/DOMImplementation.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Samuel Weinig (sam@webkit.org)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 29 matching lines @@
 #include "core/html/HTMLDocument.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/HTMLViewSourceDocument.h"
 #include "core/html/ImageDocument.h"
 #include "core/html/MediaDocument.h"
 #include "core/html/PluginDocument.h"
 #include "core/html/TextDocument.h"
 #include "core/loader/FrameLoader.h"
 #include "core/frame/Frame.h"
 #include "core/page/Page.h"
-#include "core/platform/graphics/Image.h"
 #include "core/svg/SVGDocument.h"
 #include "platform/ContentType.h"
 #include "platform/MIMETypeRegistry.h"
+#include "platform/graphics/Image.h"
 #include "platform/graphics/media/MediaPlayer.h"
 #include "platform/plugins/PluginData.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "wtf/StdLibExtras.h"
 
 namespace WebCore {
 
 typedef HashSet<String, CaseFoldingHash> FeatureSet;
 
 static void addString(FeatureSet& set, const char* string)
@@ skipping 295 matching lines @@
         return TextDocument::create(init);
     if (type == "image/svg+xml")
         return SVGDocument::create(init);
     if (isXMLMIMEType(type))
         return Document::create(init);
 
     return HTMLDocument::create(init);
 }
 
 }