[Sync] Componentize local_device_info_provider_impl and test

components/sync_driver/local_device_info_provider_mock.cc

 // 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.
 
 #include "components/sync_driver/local_device_info_provider_mock.h"
 
 namespace sync_driver {
 
 LocalDeviceInfoProviderMock::LocalDeviceInfoProviderMock()
   : is_initialized_(false) {}
@@ skipping 24 matching lines @@
 
 std::string LocalDeviceInfoProviderMock::GetSyncUserAgent() const {
   return "useragent";
 }
 
 std::string LocalDeviceInfoProviderMock::GetLocalSyncCacheGUID() const {
   return local_device_info_.get() ? local_device_info_->guid() : "";
 }
 
 void LocalDeviceInfoProviderMock::Initialize(
-    const std::string& cache_guid, const std::string& signin_scoped_device_id) {
+    const std::string& cache_guid,
+    const std::string& signin_scoped_device_id,
+    const scoped_refptr<base::TaskRunner>& blocking_task_runner) {
   // Ignored for the mock provider.
 }
 
 scoped_ptr<LocalDeviceInfoProvider::Subscription>
 LocalDeviceInfoProviderMock::RegisterOnInitializedCallback(
     const base::Closure& callback) {
   DCHECK(!is_initialized_);
   return callback_list_.Add(callback);
 }
 
 void LocalDeviceInfoProviderMock::SetInitialized(bool is_initialized) {
   is_initialized_ = is_initialized;
   if (is_initialized_) {
     callback_list_.Notify();
   }
 }
 
 }  // namespace sync_driver