move V2 classes in chrome/engine to syncer_v2 namespace

chrome/browser/sync/profile_sync_service.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/sync/profile_sync_service.h"
 
 #include <cstddef>
 #include <map>
 #include <vector>
 
@@ skipping 414 matching lines @@
 
   // TODO(rlarocque): Set the enable flag properly when crbug.com/368834 is
   // fixed and we have some way of telling whether or not this type should be
   // enabled.
   non_blocking_data_type_manager_.RegisterType(type, false);
 }
 
 void ProfileSyncService::InitializeNonBlockingType(
     syncer::ModelType type,
     const scoped_refptr<base::SequencedTaskRunner>& task_runner,
-    const base::WeakPtr<syncer::ModelTypeSyncProxyImpl>& type_sync_proxy) {
+    const base::WeakPtr<syncer_v2::ModelTypeSyncProxyImpl>& type_sync_proxy) {
   non_blocking_data_type_manager_.InitializeType(
       type, task_runner, type_sync_proxy);
 }
 
 bool ProfileSyncService::IsDataTypeControllerRunning(
     syncer::ModelType type) const {
   DataTypeController::TypeMap::const_iterator iter =
       directory_data_type_controllers_.find(type);
   if (iter == directory_data_type_controllers_.end()) {
     return false;
@@ skipping 2273 matching lines @@
     } else {
       UMA_HISTOGRAM_COUNTS("Sync.MemoryPressureWarningBeforeCleanShutdown",
                            warning_received);
     }
   }
   sync_prefs_.SetMemoryPressureWarningCount(0);
   // Will set to true during a clean shutdown, so crash or something else will
   // remain this as false.
   sync_prefs_.SetCleanShutdown(false);
 }