Add a mojo bridge for PersistentPrefStore.

chrome/browser/prefs/profile_pref_store_manager.h

 // Copyright 2014 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_BROWSER_PREFS_PROFILE_PREF_STORE_MANAGER_H_
 #define CHROME_BROWSER_PREFS_PROFILE_PREF_STORE_MANAGER_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "components/user_prefs/tracked/pref_hash_filter.h"
 
 class HashStoreContents;
 class PersistentPrefStore;
 class PrefHashStore;
 class PrefService;
 class TrackedPreferenceValidationDelegate;
 
 namespace base {
 class DictionaryValue;
 class SequencedTaskRunner;
+class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }  // namespace user_prefs
 
 // Provides a facade through which the user preference store may be accessed and
 // managed.
 class ProfilePrefStoreManager {
  public:
@@ skipping 39 matching lines @@
   static void SetPreferenceValidationRegistryPathForTesting(
       const base::string16* path);
 #endif
 
   // Creates a PersistentPrefStore providing access to the user preferences of
   // the managed profile. If |on_reset| is provided, it will be invoked if a
   // reset occurs as a result of loading the profile's prefs.
   // An optional |validation_delegate| will be notified
   // of the status of each tracked preference as they are checked.
   PersistentPrefStore* CreateProfilePrefStore(
+      const scoped_refptr<base::SingleThreadTaskRunner>& pref_task_runner,
       const scoped_refptr<base::SequencedTaskRunner>& io_task_runner,
       const base::Closure& on_reset_on_load,
-      TrackedPreferenceValidationDelegate* validation_delegate);
+      base::WeakPtr<TrackedPreferenceValidationDelegate> validation_delegate);
 
   // Initializes the preferences for the managed profile with the preference
   // values in |master_prefs|. Acts synchronously, including blocking IO.
   // Returns true on success.
   bool InitializePrefsFromMasterPrefs(
       const base::DictionaryValue& master_prefs);
 
   // Creates a single-file PrefStore as was used in M34 and earlier. Used only
   // for testing migration.
   PersistentPrefStore* CreateDeprecatedCombinedProfilePrefStore(
@@ skipping 18 matching lines @@
       tracking_configuration_;
   const size_t reporting_ids_count_;
   const std::string seed_;
   const std::string legacy_device_id_;
   PrefService* local_state_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfilePrefStoreManager);
 };
 
 #endif  // CHROME_BROWSER_PREFS_PROFILE_PREF_STORE_MANAGER_H_