Separate the syncing of extension settings and app settings into separate data

chrome/browser/extensions/extension_data_deleter.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/extensions/extension_data_deleter.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/extensions/extension_settings_backend.h"
 #include "chrome/browser/extensions/extension_settings_frontend.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/url_constants.h"
 #include "content/browser/appcache/chrome_appcache_service.h"
 #include "content/browser/in_process_webkit/webkit_context.h"
 #include "net/base/cookie_monster.h"
 #include "net/base/net_errors.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
@@ skipping 36 matching lines @@
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       base::Bind(
           &ExtensionDataDeleter::DeleteFileSystemOnFileThread, deleter));
 
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(
           &ExtensionDataDeleter::DeleteAppcachesOnIOThread, deleter));
 
-  profile->GetExtensionService()->extension_settings_frontend()->RunWithBackend(
-      base::Bind(
-          &ExtensionDataDeleter::DeleteExtensionSettingsOnFileThread, deleter));
+  profile->GetExtensionService()->extension_settings_frontend()->
+      DeleteStorageSoon(extension_id);
 }
 
 ExtensionDataDeleter::ExtensionDataDeleter(
     Profile* profile,
     const std::string& extension_id,
     const GURL& storage_origin,
     bool is_storage_isolated)
     : extension_id_(extension_id) {
   appcache_service_ = profile->GetAppCacheService();
   webkit_context_ = profile->GetWebKitContext();
@@ skipping 55 matching lines @@
   // around, and holding open file handles in this directory.
   // See http://crbug.com/85127
   if (!isolated_app_path_.empty())
     file_util::Delete(isolated_app_path_, true);
 }
 
 void ExtensionDataDeleter::DeleteAppcachesOnIOThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   appcache_service_->DeleteAppCachesForOrigin(storage_origin_, NULL);
 }
-
-void ExtensionDataDeleter::DeleteExtensionSettingsOnFileThread(
-    ExtensionSettingsBackend* backend) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
-  backend->DeleteExtensionData(extension_id_);
-}