Make classes and structures in core/page fast-allocated.

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 34 matching lines @@
 class LocalFrame;
 class FrameView;
 class GraphicsLayer;
 class Page;
 class Region;
 class ScrollableArea;
 class WebCompositorAnimationTimeline;
 
 class CORE_EXPORT ScrollingCoordinator final : public NoBaseWillBeGarbageCollectedFinalized<ScrollingCoordinator> {
     WTF_MAKE_NONCOPYABLE(ScrollingCoordinator);
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(ScrollingCoordinator);
 public:
     static PassOwnPtrWillBeRawPtr<ScrollingCoordinator> create(Page*);
 
     ~ScrollingCoordinator();
     DECLARE_TRACE();
 
     void willBeDestroyed();
 
     // Return whether this scrolling coordinator handles scrolling for the given frame view.
     bool coordinatesScrollingForFrameView(FrameView*) const;
@@ skipping 94 matching lines @@
     ScrollbarMap m_verticalScrollbars;
     HashSet<const DeprecatedPaintLayer*> m_layersWithTouchRects;
     bool m_wasFrameScrollable;
 
     MainThreadScrollingReasons m_lastMainThreadScrollingReasons;
 };
 
 } // namespace blink
 
 #endif // ScrollingCoordinator_h