Add a mojo bridge for PersistentPrefStore.

chrome/browser/prefs/chrome_pref_service_factory.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 <chrome/browser/prefs/chrome_command_line_pref_store.h>
 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 480 matching lines @@
                  new JsonPrefStore(pref_filename, pref_io_task_runner,
                                    std::unique_ptr<PrefFilter>()),
                  NULL,  // extension_prefs
                  async);
   return factory.Create(pref_registry.get());
 }
 
 std::unique_ptr<sync_preferences::PrefServiceSyncable> CreateProfilePrefs(
     const base::FilePath& profile_path,
     base::SequencedTaskRunner* pref_io_task_runner,
-    prefs::mojom::TrackedPreferenceValidationDelegate* validation_delegate,
+    std::unique_ptr<prefs::mojom::TrackedPreferenceValidationDelegate>*
+        validation_delegate,
     policy::PolicyService* policy_service,
     SupervisedUserSettingsService* supervised_user_settings,
     const scoped_refptr<PrefStore>& extension_prefs,
     const scoped_refptr<user_prefs::PrefRegistrySyncable>& pref_registry,
     bool async) {
   TRACE_EVENT0("browser", "chrome_prefs::CreateProfilePrefs");
   SCOPED_UMA_HISTOGRAM_TIMER("PrefService.CreateProfilePrefsTime");
 
   // A StartSyncFlare used to kick sync early in case of a reset event. This is
   // done since sync may bring back the user's server value post-reset which
   // could potentially cause a "settings flash" between the factory default and
   // the re-instantiated server value. Starting sync ASAP minimizes the window
   // before the server value is re-instantiated (this window can otherwise be
   // as long as 10 seconds by default).
   const base::Closure start_sync_flare_for_prefs =
       base::Bind(sync_start_util::GetFlareForSyncableService(profile_path),
                  syncer::PREFERENCES);
 
   sync_preferences::PrefServiceSyncableFactory factory;
   scoped_refptr<PersistentPrefStore> user_pref_store(
       CreateProfilePrefStoreManager(profile_path)
-          ->CreateProfilePrefStore(pref_io_task_runner,
-                                   start_sync_flare_for_prefs,
-                                   validation_delegate));
+          ->CreateProfilePrefStore(
+              content::BrowserThread::GetTaskRunnerForThread(
+                  content::BrowserThread::IO),
+              pref_io_task_runner, start_sync_flare_for_prefs,
+              validation_delegate));
   PrepareFactory(&factory, profile_path, policy_service,
                  supervised_user_settings, user_pref_store, extension_prefs,
                  async);
   std::unique_ptr<sync_preferences::PrefServiceSyncable> pref_service =
       factory.CreateSyncable(pref_registry.get());
 
   return pref_service;
 }
 
 void DisableDomainCheckForTesting() {
@@ skipping 15 matching lines @@
 
 void ClearResetTime(Profile* profile) {
   ProfilePrefStoreManager::ClearResetTime(profile->GetPrefs());
 }
 
 void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
   ProfilePrefStoreManager::RegisterProfilePrefs(registry);
 }
 
 }  // namespace chrome_prefs