Put rare PaintLayer fields into PaintLayerRareData

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

 /*
  * 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 639 matching lines @@
 
     // FIXME: scheduleAnimation() is just a method of forcing the compositor to realize that it
     // needs to commit here. We should expose a cleaner API for this.
     LayoutView* layoutView = m_page->deprecatedLocalMainFrame()->contentLayoutObject();
     if (layoutView && layoutView->compositor() && layoutView->compositor()->staleInCompositingMode())
         m_page->deprecatedLocalMainFrame()->view()->scheduleAnimation();
 
     m_touchEventTargetRectsAreDirty = true;
 }
 
-void ScrollingCoordinator::updateScrollParentForGraphicsLayer(GraphicsLayer* child, PaintLayer* parent)
+void ScrollingCoordinator::updateScrollParentForGraphicsLayer(GraphicsLayer* child, const PaintLayer* parent)
 {
     WebLayer* scrollParentWebLayer = nullptr;
     if (parent && parent->hasCompositedLayerMapping())
         scrollParentWebLayer = toWebLayer(parent->compositedLayerMapping()->scrollingContentsLayer());
 
     child->setScrollParent(scrollParentWebLayer);
 }
 
-void ScrollingCoordinator::updateClipParentForGraphicsLayer(GraphicsLayer* child, PaintLayer* parent)
+void ScrollingCoordinator::updateClipParentForGraphicsLayer(GraphicsLayer* child, const PaintLayer* parent)
 {
     WebLayer* clipParentWebLayer = nullptr;
     if (parent && parent->hasCompositedLayerMapping())
         clipParentWebLayer = toWebLayer(parent->compositedLayerMapping()->parentForSublayers());
 
     child->setClipParent(clipParentWebLayer);
 }
 
 void ScrollingCoordinator::willDestroyLayer(PaintLayer* layer)
 {
@@ skipping 402 matching lines @@
     bool frameIsScrollable = frameView && frameView->isScrollable();
     if (frameIsScrollable != m_wasFrameScrollable)
         return true;
 
     if (WebLayer* scrollLayer = frameView ? toWebLayer(frameView->layerForScrolling()) : nullptr)
         return WebSize(frameView->contentsSize()) != scrollLayer->bounds();
     return false;
 }
 
 } // namespace blink