Use full mapLocalToAncestor machinery in ScrollingCoordinator.

third_party/WebKit/Source/core/layout/LayoutBox.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc.
  *               All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 821 matching lines @@
   return rect;
 }
 
 IntSize LayoutBox::absoluteContentBoxOffset() const {
   IntPoint offset = roundedIntPoint(contentBoxOffset());
   FloatPoint absPos = localToAbsolute();
   offset.move(absPos.x(), absPos.y());
   return toIntSize(offset);
 }
 
-FloatQuad LayoutBox::absoluteContentQuad() const {
+FloatQuad LayoutBox::absoluteContentQuad(MapCoordinatesFlags flags) const {
   LayoutRect rect = contentBoxRect();
-  return localToAbsoluteQuad(FloatRect(rect));
+  return localToAbsoluteQuad(FloatRect(rect), flags);
 }
 
 LayoutRect LayoutBox::backgroundRect(BackgroundRectType rectType) const {
   EFillBox backgroundBox = TextFillBox;
   // Find the largest background rect of the given opaqueness.
   if (const FillLayer* current = &(style()->backgroundLayers())) {
     do {
       const FillLayer* cur = current;
       current = current->next();
       if (rectType == BackgroundKnownOpaqueRect) {
@@ skipping 4839 matching lines @@
     block->adjustChildDebugRect(rect);
 
   return rect;
 }
 
 bool LayoutBox::shouldClipOverflow() const {
   return hasOverflowClip() || styleRef().containsPaint() || hasControlClip();
 }
 
 }  // namespace blink