[Sync] SyncEngine refactor part 1: interfaces.

components/sync/driver/generic_change_processor_unittest.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/generic_change_processor.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 55 matching lines @@
   MockSyncApiComponentFactory() {}
 
   // SyncApiComponentFactory implementation.
   void RegisterDataTypes(
       SyncService* sync_service,
       const RegisterDataTypesMethod& register_platform_types_method) override {}
   DataTypeManager* CreateDataTypeManager(
       const WeakHandle<DataTypeDebugInfoListener>& debug_info_listener,
       const DataTypeController::TypeMap* controllers,
       const DataTypeEncryptionHandler* encryption_handler,
-      SyncBackendHost* backend,
+      SyncEngine* backend,
       DataTypeManagerObserver* observer) override {
     return nullptr;
   };
-  SyncBackendHost* CreateSyncBackendHost(
-      const std::string& name,
-      invalidation::InvalidationService* invalidator,
-      const base::WeakPtr<SyncPrefs>& sync_prefs,
-      const base::FilePath& sync_folder) override {
+  SyncEngine* CreateSyncEngine(const std::string& name,
+                               invalidation::InvalidationService* invalidator,
+                               const base::WeakPtr<SyncPrefs>& sync_prefs,
+                               const base::FilePath& sync_folder) override {
     return nullptr;
   }
   std::unique_ptr<LocalDeviceInfoProvider> CreateLocalDeviceInfoProvider()
       override {
     return nullptr;
   }
   SyncComponents CreateBookmarkSyncComponents(
       SyncService* sync_service,
       std::unique_ptr<DataTypeErrorHandler> error_handler) override {
     return SyncComponents(nullptr, nullptr);
@@ skipping 407 matching lines @@
   SyncDataList sync_data = change_processor()->GetAllSyncData(SESSIONS);
   ASSERT_EQ(sync_data.size(), 1U);
   ASSERT_EQ("session tag 2",
             sync_data[0].GetSpecifics().session().session_tag());
   EXPECT_FALSE(SyncDataRemote(sync_data[0]).GetClientTagHash().empty());
 }
 
 }  // namespace
 
 }  // namespace syncer