Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/extensions/updater/extension_updater_unittest.cc

 // Copyright (c) 2012 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 <list>
 #include <map>
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 204 matching lines @@
   }
 
   Profile* profile() { return &profile_; }
 
   net::URLRequestContextGetter* request_context() {
     return profile_.GetRequestContext();
   }
 
   ExtensionPrefs* extension_prefs() { return prefs_->prefs(); }
 
-  PrefService* pref_service() { return prefs_->pref_service(); }
+  PrefServiceSyncable* pref_service() { return prefs_->pref_service(); }
 
   Blacklist* blacklist() { return &blacklist_; }
 
   // Creates test extensions and inserts them into list. The name and
   // version are all based on their index. If |update_url| is non-null, it
   // will be used as the update_url for each extension.
   // The |id| is used to distinguish extension names and make sure that
   // no two extensions share the same name.
   void CreateTestExtensions(int id, int count, ExtensionList *list,
                             const std::string* update_url,
@@ skipping 1452 matching lines @@
 // -prodversionmin (shouldn't update if browser version too old)
 // -manifests & updates arriving out of order / interleaved
 // -malformed update url (empty, file://, has query, has a # fragment, etc.)
 // -An extension gets uninstalled while updates are in progress (so it doesn't
 //  "come back from the dead")
 // -An extension gets manually updated to v3 while we're downloading v2 (ie
 //  you don't get downgraded accidentally)
 // -An update manifest mentions multiple updates
 
 }  // namespace extensions