AppCaches which belong to hosted apps are not protected from deletion

chrome/browser/profiles/profile_impl.cc

 // Copyright (c) 2011 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 "chrome/browser/profiles/profile_impl.h"
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/environment.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
+#include "base/synchronization/waitable_event.h"
 #include "chrome/browser/autocomplete/autocomplete_classifier.h"
 #include "chrome/browser/autofill/personal_data_manager.h"
 #include "chrome/browser/background/background_contents_service_factory.h"
 #include "chrome/browser/background/background_mode_manager.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_signin.h"
 #include "chrome/browser/browsing_data_remover.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
@@ skipping 1303 matching lines @@
         BrowserThread::GetMessageLoopProxyForThread(BrowserThread::WEBKIT));
   appcache_service_ = new ChromeAppCacheService(quota_manager_->proxy());
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(
           appcache_service_.get(),
           &ChromeAppCacheService::InitializeOnIOThread,
           IsOffTheRecord()
               ? FilePath() : GetPath().Append(chrome::kAppCacheDirname),
           &GetResourceContext(),
-          make_scoped_refptr(GetExtensionSpecialStoragePolicy()),
-          clear_local_state_on_exit_));
+          make_scoped_refptr(GetExtensionSpecialStoragePolicy())));
 }
 
 WebKitContext* ProfileImpl::GetWebKitContext() {
   CreateQuotaManagerAndClients();
   return webkit_context_.get();
 }
 
 void ProfileImpl::MarkAsCleanShutdown() {
   if (prefs_.get()) {
     // The session cleanly exited, set kSessionExitedCleanly appropriately.
@@ skipping 34 matching lines @@
           RenderProcessHost* process = i.GetCurrentValue();
           process->Send(new SpellCheckMsg_EnableAutoSpellCorrect(enabled));
         }
       } else if (*pref_name_in == prefs::kClearSiteDataOnExit) {
         clear_local_state_on_exit_ =
             prefs->GetBoolean(prefs::kClearSiteDataOnExit);
         if (webkit_context_) {
           webkit_context_->set_clear_local_state_on_exit(
               clear_local_state_on_exit_);
         }
-        if (appcache_service_) {
-          appcache_service_->SetClearLocalStateOnExit(
-              clear_local_state_on_exit_);
-        }
         if (db_tracker_) {
           db_tracker_->SetClearLocalStateOnExit(
               clear_local_state_on_exit_);
         }
       } else if (*pref_name_in == prefs::kGoogleServicesUsername) {
         ProfileManager* profile_manager = g_browser_process->profile_manager();
         profile_manager->RegisterProfileName(this);
       } else if (*pref_name_in == prefs::kDefaultZoomLevel) {
           GetHostZoomMap()->set_default_zoom_level(
               prefs->GetDouble(prefs::kDefaultZoomLevel));
@@ skipping 242 matching lines @@
   if (!prerender::PrerenderManager::IsPrerenderingPossible())
     return NULL;
   if (!prerender_manager_.get()) {
     CHECK(g_browser_process->prerender_tracker());
     prerender_manager_.reset(
         new prerender::PrerenderManager(
             this, g_browser_process->prerender_tracker()));
   }
   return prerender_manager_.get();
 }
+
+base::WaitableEvent* ProfileImpl::ClearAppCache() {
+  if (appcache_service_ && prefs_->GetBoolean(prefs::kClearSiteDataOnExit))
+    return appcache_service_->ClearAppCache(NULL);
+  return NULL;
+}