DevTools: Make getEventListeners() of Console API work for window.

Source/core/inspector/InspectorDOMAgent.h

Index: Source/core/inspector/InspectorDOMAgent.h
diff --git a/Source/core/inspector/InspectorDOMAgent.h b/Source/core/inspector/InspectorDOMAgent.h
index d6c94cf64292019778424e3a4b4d0745662730cb..38e4b650ba62f7139d1c0e391e5a81c06eb48ed7 100644
--- a/Source/core/inspector/InspectorDOMAgent.h
+++ b/Source/core/inspector/InspectorDOMAgent.h
@@ -51,6 +51,7 @@ class CharacterData;
 class DOMEditor;
 class Document;
 class Element;
+class EventTarget;
 class ExceptionState;
 class InspectorFrontend;
 class InspectorHistory;
@@ -71,14 +72,14 @@ typedef int BackendNodeId;
 
 
 struct EventListenerInfo {
-    EventListenerInfo(Node* node, const AtomicString& eventType, const EventListenerVector& eventListenerVector)
-        : node(node)
+    EventListenerInfo(EventTarget* eventTarget, const AtomicString& eventType, const EventListenerVector& eventListenerVector)
+        : eventTarget(eventTarget)
         , eventType(eventType)
         , eventListenerVector(eventListenerVector)
     {
     }
 
-    Node* node;
+    EventTarget* eventTarget;
     const AtomicString eventType;
     const EventListenerVector eventListenerVector;
 };
@@ -151,7 +152,7 @@ public:
     virtual void getNodeForLocation(ErrorString*, int x, int y, int* nodeId) OVERRIDE;
     virtual void getRelayoutBoundary(ErrorString*, int nodeId, int* relayoutBoundaryNodeId) OVERRIDE;
 
-    static void getEventListeners(Node*, Vector<EventListenerInfo>& listenersArray, bool includeAncestors);
+    static void getEventListeners(EventTarget*, Vector<EventListenerInfo>& listenersArray, bool includeAncestors);
 
     // Methods called from the InspectorInstrumentation.
     void setDocument(Document*);