Merge 108780 - [v8] when a named item on document goes out of scope, actually remove it

Source/WebCore/bindings/v8/V8DOMWindowShell.cpp

 /*
  * Copyright (C) 2008, 2009, 2011 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 559 matching lines @@
     v8::HandleScope handleScope;
     v8::Context::Scope contextScope(m_context);
 
     ASSERT(!m_document.IsEmpty());
     checkDocumentWrapper(m_document, doc);
     m_document->SetAccessor(v8String(name), getter);
 }
 
 void V8DOMWindowShell::namedItemRemoved(HTMLDocument* doc, const AtomicString& name)
 {
+    if (doc->hasNamedItem(name.impl()) || doc->hasExtraNamedItem(name.impl()))
+        return;
+
+    if (!initContextIfNeeded())
+        return;
+
+    v8::HandleScope handleScope;
+    v8::Context::Scope contextScope(m_context);
+
+    ASSERT(!m_document.IsEmpty());
+    checkDocumentWrapper(m_document, doc);
+    m_document->Delete(v8String(name));
 }
 
 void V8DOMWindowShell::updateSecurityOrigin()
 {
     v8::HandleScope scope;
     setSecurityToken();
 }
 
 v8::Handle<v8::Value> V8DOMWindowShell::getHiddenObjectPrototype(v8::Handle<v8::Context> context)
 {
@@ skipping 39 matching lines @@
     return notHandledByInterceptor();
 }
 
 void V8DOMWindowShell::setLocation(DOMWindow* window, const String& locationString)
 {
     State<V8Binding>* state = V8BindingState::Only();
     window->setLocation(locationString, state->activeWindow(), state->firstWindow());
 }
 
 } // WebCore