Oilpan: Move the EventListener hierarchy to Oilpan's heap

Source/core/inspector/InjectedScriptHost.h

Index: Source/core/inspector/InjectedScriptHost.h
diff --git a/Source/core/inspector/InjectedScriptHost.h b/Source/core/inspector/InjectedScriptHost.h
index 37cc69d156f1c09898bcec56352bd13f0c9f1592..6cf3e2a95bb06001a1ad61c14e539e4e0abbad87 100644
--- a/Source/core/inspector/InjectedScriptHost.h
+++ b/Source/core/inspector/InjectedScriptHost.h
@@ -51,7 +51,7 @@ class Node;
 class ScriptValue;
 class V8Debugger;
 
-struct EventListenerInfo;
+class EventListenerInfo;
 
 // SECURITY NOTE: Although the InjectedScriptHost is intended for use solely by the inspector,
 // a reference to the InjectedScriptHost may be leaked to the page being inspected. Thus, the
@@ -92,7 +92,7 @@ public:
     InspectableObject* inspectedObject(unsigned num);
 
     void inspectImpl(PassRefPtr<JSONValue> objectToInspect, PassRefPtr<JSONValue> hints);
-    void getEventListenersImpl(EventTarget*, Vector<EventListenerInfo>& listenersArray);
+    void getEventListenersImpl(EventTarget*, WillBeHeapVector<EventListenerInfo>& listenersArray);
 
     void clearConsoleMessages();
     void debugFunction(const String& scriptId, int lineNumber, int columnNumber);