blink: Make WebMainThreadScrollingReason wrap the cc enum.

third_party/WebKit/Source/core/page/scrolling/ScrollingCoordinator.h

 /*
  * Copyright (C) 2011 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 12 matching lines @@
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ScrollingCoordinator_h
 #define ScrollingCoordinator_h
 
 #include "core/CoreExport.h"
 #include "core/layout/LayoutObject.h"
 #include "platform/PlatformWheelEvent.h"
 #include "platform/geometry/IntRect.h"
+#include "platform/scroll/MainThreadScrollingReason.h"
 #include "platform/scroll/ScrollTypes.h"
-#include "public/platform/WebMainThreadScrollingReason.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 class WebScrollbarLayer;
 }
 
 namespace blink {
 
-typedef unsigned MainThreadScrollingReasons;
+using MainThreadScrollingReasons = uint32_t;
 
 class LocalFrame;
 class FrameView;
 class GraphicsLayer;
 class Page;
 class Region;
 class ScrollableArea;
 class WebCompositorAnimationTimeline;
 class WebLayerTreeView;
 
@@ skipping 106 matching lines @@
     ScrollbarMap m_verticalScrollbars;
     HashSet<const PaintLayer*> m_layersWithTouchRects;
     bool m_wasFrameScrollable;
 
     MainThreadScrollingReasons m_lastMainThreadScrollingReasons;
 };
 
 } // namespace blink
 
 #endif // ScrollingCoordinator_h