EventSender::contextClick leaks NPObject used as its return value, leading to a leak of DOMWindow.

Source/testing/runner/EventSender.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 873 matching lines @@
     initMouseEvent(WebInputEvent::MouseDown, WebMouseEvent::ButtonRight, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
     webview()->handleInputEvent(event);
 
 #ifdef WIN32
     initMouseEvent(WebInputEvent::MouseUp, WebMouseEvent::ButtonRight, lastMousePos, &event, getCurrentEventTimeSec(m_delegate));
     webview()->handleInputEvent(event);
 
     pressedButton = WebMouseEvent::ButtonNone;
 #endif
 
-    result->set(WebBindings::makeStringArray(makeMenuItemStringsFor(m_lastContextMenuData.get(), m_delegate)));
+    NPObject* resultArray = WebBindings::makeStringArray(makeMenuItemStringsFor(m_lastContextMenuData.get(), m_delegate));
+    result->set(resultArray);
+    WebBindings::releaseObject(resultArray);
+
+    m_lastContextMenuData.reset();
 }
 
 class MouseDownTask: public WebMethodTask<EventSender> {
 public:
     MouseDownTask(EventSender* obj, const CppArgumentList& arg)
         : WebMethodTask<EventSender>(obj), m_arguments(arg) { }
     virtual void runIfValid() { m_object->mouseDown(m_arguments, 0); }
 
 private:
     CppArgumentList m_arguments;
@@ skipping 469 matching lines @@
 {
     result->setNull();
 }
 
 void EventSender::clearKillRing(const CppArgumentList&, CppVariant* result)
 {
     result->setNull();
 }
 
 }