Add an ExtensionPrefStore, layered between the user prefs nad the managed pre...

chrome/test/testing_profile.h

 // Copyright (c) 2010 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.
 
 #ifndef CHROME_TEST_TESTING_PROFILE_H_
 #define CHROME_TEST_TESTING_PROFILE_H_
 
 #include "base/base_paths.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 136 matching lines @@
     return web_data_service_.get();
   }
   virtual PasswordStore* GetPasswordStore(ServiceAccessType access) {
     return NULL;
   }
   virtual PrefService* GetPrefs() {
     if (!prefs_.get()) {
       FilePath prefs_filename =
           path_.Append(FILE_PATH_LITERAL("TestPreferences"));
 
-      prefs_.reset(new PrefService(new PrefValueStore(
-        NULL, /* no managed preference values */
-        new JsonPrefStore( /* user defined preference values */
-          prefs_filename,
-          ChromeThread::GetMessageLoopProxyForThread(ChromeThread::FILE)),
-        NULL /* no suggested preference values */)));
+      prefs_.reset(PrefService::CreateUserPrefService(prefs_filename));
       Profile::RegisterUserPrefs(prefs_.get());
       browser::RegisterAllPrefs(prefs_.get(), prefs_.get());
     }
     return prefs_.get();
   }
   virtual TemplateURLModel* GetTemplateURLModel() {
     return template_url_model_.get();
   }
   virtual TemplateURLFetcher* GetTemplateURLFetcher() { return NULL; }
   virtual history::TopSites* GetTopSites() { return NULL; }
@@ skipping 213 matching lines @@
 
   virtual ProfileId GetRuntimeId() {
     return original_profile_->GetRuntimeId();
   }
 
  protected:
   Profile* original_profile_;
 };
 
 #endif  // CHROME_TEST_TESTING_PROFILE_H_