Moving GraphicsContext and dependencies from core to platform.

Source/platform/scroll/ScrollView.h

Index: Source/platform/scroll/ScrollView.h
diff --git a/Source/core/platform/ScrollView.h b/Source/platform/scroll/ScrollView.h
similarity index 98%
rename from Source/core/platform/ScrollView.h
rename to Source/platform/scroll/ScrollView.h
index 2fe86daf1a4275d9afa92cb6fa9d5a61e7c3f200..7e2cda826d87ed2756b3891cada1f3978e531858 100644
--- a/Source/core/platform/ScrollView.h
+++ b/Source/platform/scroll/ScrollView.h
@@ -27,11 +27,12 @@
 #ifndef ScrollView_h
 #define ScrollView_h
 
-#include "core/platform/ScrollableArea.h"
-#include "core/platform/Scrollbar.h"
+#include "platform/PlatformExport.h"
 #include "platform/Widget.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/scroll/ScrollTypes.h"
+#include "platform/scroll/ScrollableArea.h"
+#include "platform/scroll/Scrollbar.h"
 
 #include "wtf/HashSet.h"
 
@@ -40,7 +41,7 @@ namespace WebCore {
 class HostWindow;
 class Scrollbar;
 
-class ScrollView : public Widget, public ScrollableArea {
+class PLATFORM_EXPORT ScrollView : public Widget, public ScrollableArea {
 public:
     ~ScrollView();