Make DOMWindowProperty a thin wrapper of ContextLifecycleObserver

third_party/WebKit/Source/core/loader/appcache/ApplicationCache.cpp

 /*
  * Copyright (C) 2008, 2009 Apple 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 32 matching lines @@
   ApplicationCacheHost* cacheHost = applicationCacheHost();
   if (cacheHost)
     cacheHost->setApplicationCache(this);
 }
 
 DEFINE_TRACE(ApplicationCache) {
   EventTargetWithInlineData::trace(visitor);
   DOMWindowProperty::trace(visitor);
 }
 
-void ApplicationCache::frameDestroyed() {
+void ApplicationCache::contextDestroyed() {
   if (ApplicationCacheHost* cacheHost = applicationCacheHost())
     cacheHost->setApplicationCache(0);
-  DOMWindowProperty::frameDestroyed();
+  DOMWindowProperty::contextDestroyed();
 }
 
 ApplicationCacheHost* ApplicationCache::applicationCacheHost() const {
   if (!frame() || !frame()->loader().documentLoader())
     return 0;
   return frame()->loader().documentLoader()->applicationCacheHost();
 }
 
 unsigned short ApplicationCache::status() const {
   recordAPIUseType();
@@ skipping 75 matching lines @@
   } else {
     Deprecation::countDeprecation(
         document, UseCounter::ApplicationCacheAPIInsecureOrigin);
     HostsUsingFeatures::countAnyWorld(
         *document,
         HostsUsingFeatures::Feature::ApplicationCacheAPIInsecureHost);
   }
 }
 
 }  // namespace blink