Oilpan: fix build after r183495.

Source/core/frame/LocalDOMWindow.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 591 matching lines @@
     return m_frame && m_frame->domWindow() == this && m_frame->host();
 }
 
 void LocalDOMWindow::sendOrientationChangeEvent()
 {
     ASSERT(RuntimeEnabledFeatures::orientationEventEnabled());
 
     // Before dispatching the event, build a list of the child frames to
     // also send the event to, to mitigate side effects from event handlers
     // potentially interfering with others.
-    WillBeHeapVector<RefPtr<Frame> > childFrames;
+    WillBeHeapVector<RefPtrWillBeMember<Frame> > childFrames;
     for (Frame* child = m_frame->tree().firstChild(); child; child = child->tree().nextSibling()) {
         childFrames.append(child);
     }
 
     dispatchEvent(Event::create(EventTypeNames::orientationchange));
 
     for (size_t i = 0; i < childFrames.size(); ++i) {
         if (childFrames[i]->domWindow())
             childFrames[i]->domWindow()->sendOrientationChangeEvent();
     }
@@ skipping 1296 matching lines @@
     FrameDestructionObserver::trace(visitor);
 }
 
 v8::Handle<v8::Object> LocalDOMWindow::wrap(v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     ASSERT_NOT_REACHED(); // LocalDOMWindow has [Custom=ToV8].
     return v8::Handle<v8::Object>();
 }
 
 } // namespace blink