Force compositing inputs to be clean for getBoundingClientRect

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

Index: third_party/WebKit/Source/core/layout/LayoutBoxModelObject.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.h b/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.h
index 09662931475073ab2077ff2c2f53c418e49a8b56..3c6a77bacc6e82222d5c2a0ed3dd9530784ceee3 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.h
@@ -178,6 +178,8 @@ class CORE_EXPORT LayoutBoxModelObject : public LayoutObject {
   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
@@ -526,6 +528,8 @@ class CORE_EXPORT LayoutBoxModelObject : public LayoutObject {
   std::unique_ptr<PaintLayer> m_layer;
 
   std::unique_ptr<LayoutBoxModelObjectRareData> m_rareData;
+
+  bool m_isInStickySubtree;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBoxModelObject, isBoxModelObject());