Move ScrollbarThemeClient to Source/platform

Source/core/platform/ScrollbarThemeMacOverlayAPI.mm

 /*
  * 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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/platform/ScrollbarThemeMacOverlayAPI.h"
 
 #include "core/platform/graphics/GraphicsContext.h"
 #include "core/platform/graphics/GraphicsContextStateSaver.h"
 #include "core/platform/mac/LocalCurrentGraphicsContext.h"
 #include "core/platform/mac/NSScrollerImpDetails.h"
-#include "core/platform/ScrollbarThemeClient.h"
+#include "platform/scroll/ScrollbarThemeClient.h"
 
 namespace WebCore {
 
 typedef HashMap<ScrollbarThemeClient*, RetainPtr<ScrollbarPainter> > ScrollbarPainterMap;
 
 static ScrollbarPainterMap* scrollbarPainterMap()
 {
     static ScrollbarPainterMap* map = new ScrollbarPainterMap;
     return map;
 }
@@ skipping 138 matching lines @@
 {
     return [painterForScrollbar(scrollbar) knobMinLength];
 }
 
 void ScrollbarThemeMacOverlayAPI::updateEnabledState(ScrollbarThemeClient* scrollbar)
 {
     [painterForScrollbar(scrollbar) setEnabled:scrollbar->enabled()];
 }
 
 } // namespace WebCore