| Index: third_party/WebKit/Source/core/frame/EventHandlerRegistry.cpp
 | 
| diff --git a/third_party/WebKit/Source/core/frame/EventHandlerRegistry.cpp b/third_party/WebKit/Source/core/frame/EventHandlerRegistry.cpp
 | 
| index 5bf13bd26d69f9c1677d217ecbe2cb1c9d4f9acf..e437f5095372b15304b65363639f943fb159be4c 100644
 | 
| --- a/third_party/WebKit/Source/core/frame/EventHandlerRegistry.cpp
 | 
| +++ b/third_party/WebKit/Source/core/frame/EventHandlerRegistry.cpp
 | 
| @@ -255,9 +255,9 @@ void EventHandlerRegistry::clearWeakMembers(Visitor* visitor)
 | 
|          for (const auto& eventTarget : *targets) {
 | 
|              Node* node = eventTarget.key->toNode();
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|              LocalDOMWindow* window = eventTarget.key->toDOMWindow();
 | 
| -            if (node && !Heap::isHeapObjectAlive(node)) {
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| +            if (node && !ThreadHeap::isHeapObjectAlive(node)) {
 | 
|                  deadTargets.append(node);
 | 
| -            } else if (window && !Heap::isHeapObjectAlive(window)) {
 | 
| +            } else if (window && !ThreadHeap::isHeapObjectAlive(window)) {
 | 
|                  deadTargets.append(window);
 | 
|              }
 | 
|          }
 | 
| 
 |