[SyncFS] Create SyncWorkerInterface

chrome/browser/sync_file_system/drive_backend/sync_engine_unittest.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_file_system/drive_backend/sync_engine.h"
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/run_loop.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/drive/drive_uploader.h"
@@ skipping 138 matching lines @@
                          SyncStatusCode sync_status) {
     EXPECT_EQ(expected_sync_status, sync_status);
     EXPECT_EQ(expected_service_status, sync_engine_->GetCurrentState());
   }
 
   MetadataDatabase* metadata_database() {
     return sync_engine_->sync_worker_->GetMetadataDatabase();
   }
 
   void SetHasRefreshToken(bool has_refresh_token) {
-    sync_engine_->sync_worker_->has_refresh_token_ = has_refresh_token;
+    sync_engine_->sync_worker_->SetHasRefreshToken(has_refresh_token);
   }
 
  private:
   content::TestBrowserThreadBundle browser_threads_;
   base::ScopedTempDir profile_dir_;
   scoped_ptr<leveldb::Env> in_memory_env_;
 
   scoped_ptr<MockExtensionService> extension_service_;
   scoped_ptr<drive_backend::SyncEngine> sync_engine_;
 
@@ skipping 214 matching lines @@
       base::Bind(&SyncEngineTest::CheckServiceState,
                  AsWeakPtr(),
                  SYNC_STATUS_OK,
                  REMOTE_SERVICE_OK));
 
   base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system