Oilpan: Remove a visitor parameter from isHeapObjectAlive

Source/core/frame/EventHandlerRegistry.cpp

Index: Source/core/frame/EventHandlerRegistry.cpp
diff --git a/Source/core/frame/EventHandlerRegistry.cpp b/Source/core/frame/EventHandlerRegistry.cpp
index 6f4e357722d5279f9eba210a811468d49a9ad291..c66d92fc74574694aa45fadfdb438b9fa88eff9c 100644
--- a/Source/core/frame/EventHandlerRegistry.cpp
+++ b/Source/core/frame/EventHandlerRegistry.cpp
@@ -209,9 +209,9 @@ void EventHandlerRegistry::clearWeakMembers(Visitor* visitor)
         for (const auto& eventTarget : *targets) {
             Node* node = eventTarget.key->toNode();
             LocalDOMWindow* window = eventTarget.key->toDOMWindow();
-            if (node && !visitor->isHeapObjectAlive(node)) {
+            if (node && !Heap::isHeapObjectAlive(node)) {
                 deadTargets.append(node);
-            } else if (window && !visitor->isHeapObjectAlive(window)) {
+            } else if (window && !Heap::isHeapObjectAlive(window)) {
                 deadTargets.append(window);
             }
         }