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 421aab0ceef2a73e4180fe1df3734a6a4f69b2f4..aada05df1b72134c71e6d3f254b9b1e82ce387f1 100644
--- a/Source/core/frame/EventHandlerRegistry.cpp
+++ b/Source/core/frame/EventHandlerRegistry.cpp
@@ -210,9 +210,9 @@ 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);
             }
         }