| Index: Source/core/page/Page.cpp
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| diff --git a/Source/core/page/Page.cpp b/Source/core/page/Page.cpp
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| index 29ea89b83a2a13bf5a9eda18cf2e16c3c946ef18..5c7695158bec9b232cfdc20d239f946a592633ee 100644
 | 
| --- a/Source/core/page/Page.cpp
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| +++ b/Source/core/page/Page.cpp
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| @@ -543,6 +543,7 @@ PassOwnPtr<LifecycleNotifier<Page> > Page::createLifecycleNotifier()
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|  
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|  void Page::trace(Visitor* visitor)
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|  {
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| +    visitor->trace(m_dragCaretController);
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|      visitor->trace(m_dragController);
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|      visitor->trace(m_multisamplingChangedObservers);
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|      visitor->trace(m_frameHost);
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| 
 |