Moving GraphicsContext and dependencies from core to platform.

Source/platform/scroll/ScrollbarThemeGtkOrAura.h

 /*
  * 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 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 ScrollbarThemeGtkOrAura_h
 #define ScrollbarThemeGtkOrAura_h
 
-#include "core/platform/ScrollbarThemeNonMacCommon.h"
+#include "platform/scroll/ScrollbarThemeNonMacCommon.h"
 
 namespace WebCore {
 
-class ScrollbarThemeGtkOrAura : public ScrollbarThemeNonMacCommon {
+class PLATFORM_EXPORT ScrollbarThemeGtkOrAura : public ScrollbarThemeNonMacCommon {
 public:
     virtual int scrollbarThickness(ScrollbarControlSize);
 
 protected:
     virtual void paintTrackPiece(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart);
     virtual void paintButton(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart);
     virtual void paintThumb(GraphicsContext*, ScrollbarThemeClient*, const IntRect&);
     virtual bool shouldCenterOnThumb(ScrollbarThemeClient*, const PlatformMouseEvent&);
     virtual IntSize buttonSize(ScrollbarThemeClient*);
     virtual int minimumThumbLength(ScrollbarThemeClient*);
 };
 
 } // namespace WebCore
 
 #endif