[Sync] rename USS processor / worker interfaces

sync/engine/model_type_sync_worker.h

Index: sync/engine/model_type_sync_worker.h
diff --git a/sync/engine/model_type_sync_worker.h b/sync/engine/model_type_sync_worker.h
deleted file mode 100644
index 081130c82a5c4b74eb67d822b59b937fdb72ab6a..0000000000000000000000000000000000000000
--- a/sync/engine/model_type_sync_worker.h
+++ /dev/null
@@ -1,24 +0,0 @@
-// 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.
-
-#ifndef SYNC_ENGINE_MODEL_TYPE_SYNC_WORKER_H_
-#define SYNC_ENGINE_MODEL_TYPE_SYNC_WORKER_H_
-
-#include "sync/internal_api/public/non_blocking_sync_common.h"
-
-namespace syncer_v2 {
-
-// Interface used by a synced data type to issue requests to the sync backend.
-class SYNC_EXPORT_PRIVATE ModelTypeSyncWorker {
- public:
-  ModelTypeSyncWorker();
-  virtual ~ModelTypeSyncWorker();
-
-  // Entry point for the ModelTypeSyncProxy to send commit requests.
-  virtual void EnqueueForCommit(const CommitRequestDataList& list) = 0;
-};
-
-}  // namespace syncer
-
-#endif  // SYNC_ENGINE_MODEL_TYPE_SYNC_WORKER_H_