Use full mapLocalToAncestor machinery in ScrollingCoordinator.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 371 matching lines @@
   }
   LayoutSize contentBoxOffset() const {
     return LayoutSize(borderLeft() + paddingLeft(), borderTop() + paddingTop());
   }
   // The content box in absolute coords. Ignores transforms.
   IntRect absoluteContentBox() const;
   // The offset of the content box in absolute coords, ignoring transforms.
   IntSize absoluteContentBoxOffset() const;
   // The content box converted to absolute coords (taking transforms into
   // account).
-  FloatQuad absoluteContentQuad() const;
+  FloatQuad absoluteContentQuad(MapCoordinatesFlags = 0) const;
   // The enclosing rectangle of the background with given opacity requirement.
   LayoutRect backgroundRect(BackgroundRectType) const;
 
   // This returns the content area of the box (excluding padding and border).
   // The only difference with contentBoxRect is that computedCSSContentBoxRect
   // does include the intrinsic padding in the content box as this is what some
   // callers expect (like getComputedStyle).
   LayoutRect computedCSSContentBoxRect() const {
     return LayoutRect(
         borderLeft() + computedCSSPaddingLeft(),
@@ skipping 1228 matching lines @@
 
 inline bool LayoutBox::isForcedFragmentainerBreakValue(EBreak breakValue) {
   return breakValue == BreakColumn || breakValue == BreakLeft ||
          breakValue == BreakPage || breakValue == BreakRecto ||
          breakValue == BreakRight || breakValue == BreakVerso;
 }
 
 }  // namespace blink
 
 #endif  // LayoutBox_h