| Index: Source/core/page/Page.cpp | 
| diff --git a/Source/core/page/Page.cpp b/Source/core/page/Page.cpp | 
| index bcbb175c612174016ed1ac4a1395b937f2d8b9db..7d325ea83d9445eb6c46849a6e503666e2f62c15 100644 | 
| --- a/Source/core/page/Page.cpp | 
| +++ b/Source/core/page/Page.cpp | 
| @@ -543,6 +543,7 @@ DEFINE_TRACE(Page) | 
| visitor->trace(m_focusController); | 
| visitor->trace(m_contextMenuController); | 
| visitor->trace(m_pointerLockController); | 
| +    visitor->trace(m_scrollingCoordinator); | 
| visitor->trace(m_undoStack); | 
| visitor->trace(m_mainFrame); | 
| visitor->trace(m_validationMessageClient); | 
|  |