| Index: Source/modules/serviceworkers/NavigatorServiceWorker.cpp | 
| diff --git a/Source/modules/serviceworkers/NavigatorServiceWorker.cpp b/Source/modules/serviceworkers/NavigatorServiceWorker.cpp | 
| index f929fe53236d83606eef4c4338be67143bf364cd..e7427042c04d70739ad026c52b8a36b670ff4f7d 100644 | 
| --- a/Source/modules/serviceworkers/NavigatorServiceWorker.cpp | 
| +++ b/Source/modules/serviceworkers/NavigatorServiceWorker.cpp | 
| @@ -18,9 +18,7 @@ NavigatorServiceWorker::NavigatorServiceWorker(Navigator& navigator) | 
| { | 
| } | 
|  | 
| -NavigatorServiceWorker::~NavigatorServiceWorker() | 
| -{ | 
| -} | 
| +DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(NavigatorServiceWorker); | 
|  | 
| NavigatorServiceWorker* NavigatorServiceWorker::from(Document& document) | 
| { | 
| @@ -78,6 +76,7 @@ void NavigatorServiceWorker::trace(Visitor* visitor) | 
| { | 
| visitor->trace(m_serviceWorker); | 
| WillBeHeapSupplement<Navigator>::trace(visitor); | 
| +    DOMWindowProperty::trace(visitor); | 
| } | 
|  | 
| } // namespace blink | 
|  |