| Index: third_party/WebKit/Source/core/paint/PaintLayer.h | 
| diff --git a/third_party/WebKit/Source/core/paint/PaintLayer.h b/third_party/WebKit/Source/core/paint/PaintLayer.h | 
| index 1328a53ceda13f5daa82d16b4646c3072022c9b6..c08a6f48a9d907d003ab3f3d03e1719541c99e50 100644 | 
| --- a/third_party/WebKit/Source/core/paint/PaintLayer.h | 
| +++ b/third_party/WebKit/Source/core/paint/PaintLayer.h | 
| @@ -374,7 +374,8 @@ class CORE_EXPORT PaintLayer : public DisplayItemClient { | 
| } | 
|  | 
| void ConvertToLayerCoords(const PaintLayer* ancestor_layer, | 
| -                            LayoutPoint&) const; | 
| +                            LayoutPoint&, | 
| +                            bool* is_descendant = nullptr) const; | 
| void ConvertToLayerCoords(const PaintLayer* ancestor_layer, | 
| LayoutRect&) const; | 
|  | 
|  |