Oilpan: move MessagePortArray to the heap.

Source/core/frame/LocalDOMWindow.h

 /*
  * Copyright (C) 2006, 2007, 2009, 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 65 matching lines @@
     class Screen;
     class ScriptCallStack;
     class SecurityOrigin;
     class SerializedScriptValue;
     class Storage;
     class StyleMedia;
     class DOMWindowCSS;
 
     struct WindowFeatures;
 
-    typedef Vector<RefPtr<MessagePort>, 1> MessagePortArray;
+    typedef WillBeHeapVector<RefPtrWillBeMember<MessagePort>, 1> MessagePortArray;
 
 enum PageshowEventPersistence {
     PageshowEventNotPersisted = 0,
     PageshowEventPersisted = 1
 };
 
     enum SetLocationLocking { LockHistoryBasedOnGestureState, LockHistoryAndBackForwardList };
 
     class LocalDOMWindow FINAL : public RefCountedWillBeRefCountedGarbageCollected<LocalDOMWindow>, public ScriptWrappable, public EventTargetWithInlineData, public DOMWindowBase64, public FrameDestructionObserver, public WillBeHeapSupplementable<LocalDOMWindow>, public LifecycleContext<LocalDOMWindow> {
         WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(LocalDOMWindow);
@@ skipping 306 matching lines @@
     }
 
     inline String LocalDOMWindow::defaultStatus() const
     {
         return m_defaultStatus;
     }
 
 } // namespace WebCore
 
 #endif // DOMWindow_h