Support edge-inclusive intersections in mapToVisibleRectInAncestorSpace

third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

 /*
  * Copyright (C) 2009, 2010, 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 2206 matching lines @@
     graphicsLayerBoundsInObjectSpace.move(offsetFromAnchorLayoutObject);
     // The object space means including writing mode flip.
     if (anchorLayoutObject->isBox())
         toLayoutBox(anchorLayoutObject)->flipForWritingMode(graphicsLayerBoundsInObjectSpace);
 
     // Now map the bounds to its visible content rect in screen space, including applying clips along the way.
     LayoutRect visibleContentRect(graphicsLayerBoundsInObjectSpace);
     LayoutView* rootView = anchorLayoutObject->view();
     while (rootView->frame()->ownerLayoutObject())
         rootView = rootView->frame()->ownerLayoutObject()->view();
-    anchorLayoutObject->mapToVisibleRectInAncestorSpace(rootView, visibleContentRect, 0);
+    anchorLayoutObject->mapToVisibleRectInAncestorSpace(rootView, visibleContentRect, 0, false);
     visibleContentRect.intersect(LayoutRect(rootView->frameView()->visibleContentRect()));
 
     IntRect enclosingGraphicsLayerBounds(enclosingIntRect(graphicsLayerBounds));
 
     // Map the visible content rect from screen space to local graphics layer space.
     IntRect localInterestRect;
     // If the visible content rect is empty, then it makes no sense to map it back since there is nothing to map.
     if (!visibleContentRect.isEmpty()) {
         localInterestRect = anchorLayoutObject->absoluteToLocalQuad(FloatRect(visibleContentRect), UseTransforms | TraverseDocumentBoundaries).enclosingBoundingBox();
         localInterestRect.move(-offsetFromAnchorLayoutObject);
@@ skipping 305 matching lines @@
     } else if (graphicsLayer == m_scrollingContentsLayer.get()) {
         name = "Scrolling Contents Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink