Force compositing inputs to be clean for getBoundingClientRect

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google 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 160 matching lines @@
   int pixelSnappedOffsetTop(const Element* parent) const {
     return roundToInt(offsetTop(parent));
   }
   virtual int pixelSnappedOffsetWidth(const Element*) const;
   virtual int pixelSnappedOffsetHeight(const Element*) const;
 
   bool hasSelfPaintingLayer() const;
   PaintLayer* layer() const { return m_layer.get(); }
   PaintLayerScrollableArea* getScrollableArea() const;
 
+  bool isInStickySubtree() const { return m_isInStickySubtree; }
+
   virtual void updateFromStyle();
 
   // The type of PaintLayer to instantiate. Any value returned from this
   // function other than NoPaintLayer will populate |m_layer|.
   virtual PaintLayerType layerTypeRequired() const = 0;
 
   // This will work on inlines to return the bounding box of all of the lines'
   // border boxes.
   virtual IntRect borderBoundingBox() const = 0;
 
@@ skipping 328 matching lines @@
     if (!m_rareData)
       m_rareData = WTF::makeUnique<LayoutBoxModelObjectRareData>();
     return *m_rareData.get();
   }
 
   // The PaintLayer associated with this object. |m_layer| can be nullptr
   // depending on the return value of layerTypeRequired().
   std::unique_ptr<PaintLayer> m_layer;
 
   std::unique_ptr<LayoutBoxModelObjectRareData> m_rareData;
+
+  bool m_isInStickySubtree;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBoxModelObject, isBoxModelObject());
 
 }  // namespace blink
 
 #endif  // LayoutBoxModelObject_h