WIP: do not perform a deep reset on frame destruction.

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 526 matching lines @@
 }
 
 Page* LocalDOMWindow::page()
 {
     return frame() ? frame()->page() : 0;
 }
 
 void LocalDOMWindow::frameDestroyed()
 {
     FrameDestructionObserver::frameDestroyed();
-    reset();
+    willDestroyDocumentInFrame();
+    m_properties.clear();
 }
 
 void LocalDOMWindow::willDetachFrameHost()
 {
     m_frame->host()->eventHandlerRegistry().didRemoveAllEventHandlers(*this);
     m_frame->console().messageStorage()->frameWindowDiscarded(this);
     InspectorInstrumentation::frameWindowDiscarded(m_frame, this);
 }
 
 void LocalDOMWindow::willDestroyDocumentInFrame()
@@ skipping 1362 matching lines @@
     LifecycleContext<LocalDOMWindow>::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