Add non-blocking sync code to ProfileSyncService

chrome/browser/sync/glue/sync_backend_host_mock.cc

 // Copyright 2013 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/glue/sync_backend_host_mock.h"
 
 #include "components/sync_driver/sync_frontend.h"
 
 namespace browser_sync {
 
@@ skipping 51 matching lines @@
 
 void SyncBackendHostMock::ActivateDataType(
     syncer::ModelType type, syncer::ModelSafeGroup group,
     ChangeProcessor* change_processor) {}
 void SyncBackendHostMock::DeactivateDataType(syncer::ModelType type) {}
 
 syncer::UserShare* SyncBackendHostMock::GetUserShare() const {
   return NULL;
 }
 
+syncer::SyncCoreProxy SyncBackendHostMock::GetSyncCoreProxy() {
+  return syncer::SyncCoreProxy::GetInvalidSyncCoreProxyForTest();
+}
+
 SyncBackendHost::Status SyncBackendHostMock::GetDetailedStatus() {
   return SyncBackendHost::Status();
 }
 
 syncer::sessions::SyncSessionSnapshot
     SyncBackendHostMock::GetLastSessionSnapshot() const {
   return syncer::sessions::SyncSessionSnapshot();
 }
 
 bool SyncBackendHostMock::HasUnsyncedItems() const {
@@ skipping 31 matching lines @@
 void SyncBackendHostMock::RequestBufferedProtocolEventsAndEnableForwarding() {}
 
 void SyncBackendHostMock::DisableProtocolEventForwarding() {}
 
 void SyncBackendHostMock::set_fail_initial_download(bool should_fail) {
   fail_initial_download_ = should_fail;
 }
 
 }  // namespace browser_sync