Remove LocalDOMWindow unuseds.

third_party/WebKit/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 467 matching lines @@
 LocalDOMWindow* LocalDOMWindow::toDOMWindow()
 {
     return this;
 }
 
 PassRefPtrWillBeRawPtr<MediaQueryList> LocalDOMWindow::matchMedia(const String& media)
 {
     return document() ? document()->mediaQueryMatcher().matchMedia(media) : nullptr;
 }
 
-Page* LocalDOMWindow::page()
-{
-    return frame() ? frame()->page() : nullptr;
-}
-
 void LocalDOMWindow::willDetachFrameHost()
 {
     frame()->host()->eventHandlerRegistry().didRemoveAllEventHandlers(*this);
     frame()->host()->consoleMessageStorage().frameWindowDiscarded(this);
     LocalDOMWindow::notifyContextDestroyed();
 }
 
 void LocalDOMWindow::frameDestroyed()
 {
     willDestroyDocumentInFrame();
@@ skipping 1003 matching lines @@
 {
     // If the LocalDOMWindow still has a frame reference, that frame must point
     // back to this LocalDOMWindow: otherwise, it's easy to get into a situation
     // where script execution leaks between different LocalDOMWindows.
     if (m_frameObserver->frame())
         ASSERT_WITH_SECURITY_IMPLICATION(m_frameObserver->frame()->domWindow() == this);
     return m_frameObserver->frame();
 }
 
 } // namespace blink