Remove DOMWindowProperty

third_party/WebKit/Source/core/frame/DOMWindow.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/frame/DOMWindow.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/SecurityContext.h"
@@ skipping 137 matching lines @@
             frame()->securityContext()->getSecurityOrigin()))
       return false;
   }
 
   callingWindow.printErrorMessage(
       crossDomainAccessErrorMessage(&callingWindow));
   return true;
 }
 
 void DOMWindow::resetLocation() {
-  // Location needs to be reset manually because it doesn't inherit from
-  // DOMWindowProperty.  DOMWindowProperty is local-only, and Location needs to
-  // support remote windows, too.
+  // Location needs to be reset manually so that it doesn't retain a stale
+  // Frame pointer.
   if (m_location) {
     m_location->reset();
     m_location = nullptr;
   }
 }
 
 bool DOMWindow::isSecureContext() const {
   if (!frame())
     return false;
 
@@ skipping 263 matching lines @@
   page->focusController().focusDocumentView(frame(), true /* notifyEmbedder */);
 }
 
 DEFINE_TRACE(DOMWindow) {
   visitor->trace(m_frame);
   visitor->trace(m_location);
   EventTargetWithInlineData::trace(visitor);
 }
 
 }  // namespace blink