Moving GraphicsContext and dependencies from core to platform.

Source/platform/scroll/ScrollbarThemeMacNonOverlayAPI.h

Index: Source/platform/scroll/ScrollbarThemeMacNonOverlayAPI.h
diff --git a/Source/core/platform/ScrollbarThemeMacNonOverlayAPI.h b/Source/platform/scroll/ScrollbarThemeMacNonOverlayAPI.h
similarity index 94%
rename from Source/core/platform/ScrollbarThemeMacNonOverlayAPI.h
rename to Source/platform/scroll/ScrollbarThemeMacNonOverlayAPI.h
index e51380059f46d433793aa671a9dafbc37baf45b4..ca864c57a4ceacb39846c7ebfc164caa4857d050 100644
--- a/Source/core/platform/ScrollbarThemeMacNonOverlayAPI.h
+++ b/Source/platform/scroll/ScrollbarThemeMacNonOverlayAPI.h
@@ -31,11 +31,11 @@
 #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; }