Move LayerHitTestRects to a separate file.

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
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ScrollingCoordinator_h
 #define ScrollingCoordinator_h
 
 #include "core/CoreExport.h"
-#include "core/layout/LayoutObject.h"
+#include "core/paint/LayerHitTestRects.h"
 #include "platform/PlatformWheelEvent.h"
 #include "platform/geometry/IntRect.h"
+#include "platform/heap/Handle.h"
 #include "platform/scroll/MainThreadScrollingReason.h"
 #include "platform/scroll/ScrollTypes.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/text/WTFString.h"
 #include <memory>
 
 namespace blink {
-class WebScrollbarLayer;
-}
-
-namespace blink {
-
 using MainThreadScrollingReasons = uint32_t;
 
 class LocalFrame;
 class FrameView;
 class GraphicsLayer;
 class Page;
+class PaintLayer;
 class Region;
 class ScrollableArea;
 class CompositorAnimationTimeline;
 class WebLayerTreeView;
+class WebScrollbarLayer;
 
 class CORE_EXPORT ScrollingCoordinator final
     : public GarbageCollectedFinalized<ScrollingCoordinator> {
   WTF_MAKE_NONCOPYABLE(ScrollingCoordinator);
 
  public:
   static ScrollingCoordinator* create(Page*);
 
   ~ScrollingCoordinator();
   DECLARE_TRACE();
@@ skipping 122 matching lines @@
   ScrollbarMap m_verticalScrollbars;
   HashSet<const PaintLayer*> m_layersWithTouchRects;
   bool m_wasFrameScrollable;
 
   MainThreadScrollingReasons m_lastMainThreadScrollingReasons;
 };
 
 }  // namespace blink
 
 #endif  // ScrollingCoordinator_h