Clarify ordinary page handling.

third_party/WebKit/Source/web/ChromeClientImpl.cpp

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 390 matching lines @@
 bool ChromeClientImpl::openBeforeUnloadConfirmPanelDelegate(LocalFrame* frame, const String& message, bool isReload)
 {
     notifyPopupOpeningObservers();
     WebLocalFrameImpl* webframe = WebLocalFrameImpl::fromFrame(frame);
     return webframe->client() && webframe->client()->runModalBeforeUnloadDialog(isReload, message);
 }
 
 void ChromeClientImpl::closeWindowSoon()
 {
     // Make sure this Page can no longer be found by JS.
-    Page::ordinaryPages().remove(m_webView->page());
+    m_webView->page()->willBeClosed();
 
     // Make sure that all loading is stopped.  Ensures that JS stops executing!
     m_webView->mainFrame()->stopLoading();
 
     if (m_webView->client())
         m_webView->client()->closeWidgetSoon();
 }
 
 // Although a LocalFrame is passed in, we don't actually use it, since we
 // already know our own m_webView.
@@ skipping 605 matching lines @@
     if (m_webView->pageImportanceSignals())
         m_webView->pageImportanceSignals()->setIssuedNonGetFetchFromScript();
 }
 
 PassOwnPtr<WebFrameScheduler> ChromeClientImpl::createFrameScheduler()
 {
     return m_webView->scheduler()->createFrameScheduler().release();
 }
 
 } // namespace blink