Moving GraphicsContext and dependencies from core to platform.

Source/web/tests/ViewportTest.cpp

 /*
  * Copyright (C) 2013 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 25 matching lines @@
 #include "WebFrame.h"
 #include "WebScriptSource.h"
 #include "WebSettings.h"
 #include "WebViewClient.h"
 #include "core/dom/ViewportDescription.h"
 #include "core/frame/Frame.h"
 #include "core/frame/FrameView.h"
 #include "core/page/Page.h"
 #include "core/page/PageScaleConstraints.h"
 #include "core/page/Settings.h"
-#include "core/platform/ScrollbarTheme.h"
 #include "platform/geometry/IntPoint.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/geometry/IntSize.h"
+#include "platform/scroll/ScrollbarTheme.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebUnitTestSupport.h"
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
 #include <vector>
 
 using namespace blink;
 using WebCore::Frame;
 using WebCore::FrameView;
@@ skipping 3044 matching lines @@
 
     EXPECT_NEAR(64.0f, constraints.layoutSize.width(), 0.01);
     EXPECT_NEAR(70.4f, constraints.layoutSize.height(), 0.01);
     EXPECT_NEAR(5.0f, constraints.initialScale, 0.01f);
     EXPECT_NEAR(5.0f, constraints.minimumScale, 0.01f);
     EXPECT_NEAR(5.0f, constraints.maximumScale, 0.01f);
     EXPECT_TRUE(page->viewportDescription().userZoom);
 }
 
 } // namespace