Oilpan: add explicit Persistent<T>(T&) and Member<T>(T&) constructors.

Source/core/frame/DOMWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 95 matching lines @@
 
 using std::min;
 using std::max;
 
 namespace WebCore {
 
 class PostMessageTimer FINAL : public SuspendableTimer {
 public:
     PostMessageTimer(DOMWindow& window, PassRefPtr<SerializedScriptValue> message, const String& sourceOrigin, PassRefPtrWillBeRawPtr<DOMWindow> source, PassOwnPtr<MessagePortChannelArray> channels, SecurityOrigin* targetOrigin, PassRefPtr<ScriptCallStack> stackTrace, UserGestureToken* userGestureToken)
         : SuspendableTimer(window.document())
-        , m_window(&window)
+        , m_window(window)
         , m_message(message)
         , m_origin(sourceOrigin)
         , m_source(source)
         , m_channels(channels)
         , m_targetOrigin(targetOrigin)
         , m_stackTrace(stackTrace)
         , m_userGestureToken(userGestureToken)
     {
     }
 
@@ skipping 1761 matching lines @@
     visitor->trace(m_localStorage);
     visitor->trace(m_applicationCache);
     visitor->trace(m_performance);
     visitor->trace(m_css);
 #if ENABLE(OILPAN)
     HeapSupplementable<DOMWindow>::trace(visitor);
 #endif
 }
 
 } // namespace WebCore