[Sync] Make ModelSafeWorker a true interface

chrome/browser/sync/test/engine/fake_model_safe_worker_registrar.h

+// Copyright (c) 2011 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 CHROME_BROWSER_SYNC_TEST_ENGINE_FAKE_MODEL_SAFE_WORKER_REGISTRAR_H_
+#define CHROME_BROWSER_SYNC_TEST_ENGINE_FAKE_MODEL_SAFE_WORKER_REGISTRAR_H_
+#pragma once
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "chrome/browser/sync/engine/model_safe_worker.h"
+
+namespace browser_sync {
+
+class FakeModelSafeWorkerRegistrar : public ModelSafeWorkerRegistrar {
+ public:
+  explicit FakeModelSafeWorkerRegistrar(const ModelSafeRoutingInfo& routes);
+
+  virtual ~FakeModelSafeWorkerRegistrar();
+  virtual void GetWorkers(std::vector<ModelSafeWorker*>* out) OVERRIDE;
+  virtual void GetModelSafeRoutingInfo(ModelSafeRoutingInfo* out) OVERRIDE;
+
+ private:
+  const ModelSafeRoutingInfo routes_;
+  std::vector<scoped_refptr<ModelSafeWorker> > workers_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeModelSafeWorkerRegistrar);
+};
+
+}  // namespace browser_sync
+
+#endif  // CHROME_BROWSER_SYNC_TEST_ENGINE_FAKE_MODEL_SAFE_WORKER_REGISTRAR_H_
+