Moving GraphicsContext and dependencies from core to platform.

Source/web/DragClientImpl.cpp

 /*
  * Copyright (C) 2009 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 18 matching lines @@
  */
 
 #include "config.h"
 #include "DragClientImpl.h"
 #include "WebViewClient.h"
 #include "WebViewImpl.h"
 #include "core/dom/Clipboard.h"
 #include "core/frame/Frame.h"
 #include "core/platform/DragImage.h"
 #include "core/platform/chromium/ChromiumDataObject.h"
-#include "core/platform/graphics/skia/NativeImageSkia.h"
 #include "platform/geometry/IntSize.h"
+#include "platform/graphics/skia/NativeImageSkia.h"
 #include "public/platform/WebCommon.h"
 #include "public/platform/WebDragData.h"
 #include "public/platform/WebImage.h"
 #include "public/platform/WebPoint.h"
 #include "public/web/WebDragOperation.h"
 #include "wtf/Assertions.h"
 #include "wtf/RefPtr.h"
 
 using namespace WebCore;
 
@@ skipping 31 matching lines @@
             float scale = m_webView->deviceScaleFactor() / resolutionScale;
             dragImage->scale(scale, scale);
         }
         image = dragImage->bitmap();
     }
 
     m_webView->startDragging(frame, dragData, dragOperationMask, image, offsetPoint);
 }
 
 } // namespace blink