| Index: third_party/WebKit/Source/core/dom/Document.h | 
| diff --git a/third_party/WebKit/Source/core/dom/Document.h b/third_party/WebKit/Source/core/dom/Document.h | 
| index 64606556f37d3a75ef46048f00c76225cbacee73..f275e581fcc9176ca27668398db138fa69d055b9 100644 | 
| --- a/third_party/WebKit/Source/core/dom/Document.h | 
| +++ b/third_party/WebKit/Source/core/dom/Document.h | 
| @@ -1082,6 +1082,8 @@ public: | 
| ShadowCascadeOrder shadowCascadeOrder() const { return m_shadowCascadeOrder; } | 
| void setShadowCascadeOrder(ShadowCascadeOrder); | 
|  | 
| +    bool containsV1ShadowTree() const { return m_shadowCascadeOrder == ShadowCascadeOrder::ShadowCascadeV1; } | 
| + | 
| void setRootScroller(Element*, ExceptionState&); | 
| Element* rootScroller(); | 
|  | 
|  |