Wire sync shutdown reason from PSS all the way down to sync manager.

sync/internal_api/test/fake_sync_manager.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 "sync/internal_api/public/test/fake_sync_manager.h"
 
 #include <cstddef>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 184 matching lines @@
 
 SyncStatus FakeSyncManager::GetDetailedStatus() const {
   NOTIMPLEMENTED();
   return SyncStatus();
 }
 
 void FakeSyncManager::SaveChanges() {
   // Do nothing.
 }
 
-void FakeSyncManager::ShutdownOnSyncThread() {
+void FakeSyncManager::ShutdownOnSyncThread(ShutdownReason reason) {
   DCHECK(sync_task_runner_->RunsTasksOnCurrentThread());
   test_user_share_.TearDown();
 }
 
 UserShare* FakeSyncManager::GetUserShare() {
   return test_user_share_.user_share();
 }
 
 syncer::SyncContextProxy* FakeSyncManager::GetSyncContextProxy() {
   return &null_sync_context_proxy_;
@@ skipping 51 matching lines @@
 
 ModelTypeSet FakeSyncManager::GetLastRefreshRequestTypes() {
   return last_refresh_request_types_;
 }
 
 void FakeSyncManager::SetInvalidatorEnabled(bool invalidator_enabled) {
   // Do nothing.
 }
 
 }  // namespace syncer