Moving GraphicsContext and dependencies from core to platform.

Source/platform/scroll/ScrollbarThemeMacNonOverlayAPI.h

 /*
  * 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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ScrollbarThemeMacNonOverlayAPI_h
 #define ScrollbarThemeMacNonOverlayAPI_h
 
-#include "core/platform/ScrollbarThemeMacCommon.h"
+#include "platform/scroll/ScrollbarThemeMacCommon.h"
 
 namespace WebCore {
 
-class ScrollbarThemeMacNonOverlayAPI : public ScrollbarThemeMacCommon {
+class PLATFORM_EXPORT ScrollbarThemeMacNonOverlayAPI : public ScrollbarThemeMacCommon {
 public:
     virtual int scrollbarThickness(ScrollbarControlSize = RegularScrollbar) OVERRIDE;
     virtual bool usesOverlayScrollbars() const OVERRIDE { return false; }
     virtual ScrollbarButtonsPlacement buttonsPlacement() const OVERRIDE;
 
     virtual bool paint(ScrollbarThemeClient*, GraphicsContext*, const IntRect& damageRect) OVERRIDE;
 
 protected:
     virtual IntRect trackRect(ScrollbarThemeClient*, bool painting = false) OVERRIDE;
     virtual IntRect backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) OVERRIDE;
     virtual IntRect forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) OVERRIDE;
 
     virtual void updateButtonPlacement() OVERRIDE;
 
     virtual bool hasButtons(ScrollbarThemeClient*) OVERRIDE;
     virtual bool hasThumb(ScrollbarThemeClient*) OVERRIDE;
 
     virtual int minimumThumbLength(ScrollbarThemeClient*) OVERRIDE;
 };
 
 }
 
 #endif