Moving GraphicsContext and dependencies from core to platform.

Source/platform/scroll/ScrollbarThemeNonMacCommon.h

Index: Source/platform/scroll/ScrollbarThemeNonMacCommon.h
diff --git a/Source/core/platform/ScrollbarThemeNonMacCommon.h b/Source/platform/scroll/ScrollbarThemeNonMacCommon.h
similarity index 95%
rename from Source/core/platform/ScrollbarThemeNonMacCommon.h
rename to Source/platform/scroll/ScrollbarThemeNonMacCommon.h
index 3fc76476037eeeb05f1ca939007163fed9950895..35f7431ccc354134e9036701ac8c9dd0ad5f1cc9 100644
--- a/Source/core/platform/ScrollbarThemeNonMacCommon.h
+++ b/Source/platform/scroll/ScrollbarThemeNonMacCommon.h
@@ -31,13 +31,13 @@
 #ifndef ScrollbarThemeNonMacCommon_h
 #define ScrollbarThemeNonMacCommon_h
 
-#include "core/platform/ScrollbarTheme.h"
+#include "platform/scroll/ScrollbarTheme.h"
 
 namespace WebCore {
 
 class PlatformMouseEvent;
 
-class ScrollbarThemeNonMacCommon : public ScrollbarTheme {
+class PLATFORM_EXPORT ScrollbarThemeNonMacCommon : public ScrollbarTheme {
 protected:
     virtual bool hasButtons(ScrollbarThemeClient*) OVERRIDE { return true; }
     virtual bool hasThumb(ScrollbarThemeClient*) OVERRIDE;