USS: Introduce dependency of SharedModelTypeProcessor on ModelTypeService

sync/internal_api/public/test/fake_model_type_service.h

Index: sync/internal_api/public/test/fake_model_type_service.h
diff --git a/sync/internal_api/public/test/fake_model_type_service.h b/sync/internal_api/public/test/fake_model_type_service.h
new file mode 100644
index 0000000000000000000000000000000000000000..b64ed5d8498e9b03d99adc687e07f1737755e2c5
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+++ b/sync/internal_api/public/test/fake_model_type_service.h
@@ -0,0 +1,43 @@
+// Copyright 2015 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_INTERNAL_API_PUBLIC_TEST_FAKE_MODEL_TYPE_SERVICE_H_
+#define SYNC_INTERNAL_API_PUBLIC_TEST_FAKE_MODEL_TYPE_SERVICE_H_
+
+#include "sync/api/data_batch.h"
+#include "sync/api/metadata_batch.h"
+#include "sync/api/metadata_change_list.h"
+#include "sync/api/model_type_service.h"
+
+namespace syncer_v2 {
+
+// A non-functional implementation of ModelTypeService for
+// testing purposes.
+class FakeModelTypeService : public ModelTypeService {
+ public:
+  FakeModelTypeService();
+  ~FakeModelTypeService() override;
+
+  scoped_ptr<MetadataChangeList> CreateMetadataChangeList() override;
+
+  syncer::SyncError MergeSyncData(
+      scoped_ptr<MetadataChangeList> metadata_change_list,
+      EntityDataList entity_data_list) override;
+
+  syncer::SyncError ApplySyncChanges(
+      scoped_ptr<MetadataChangeList> metadata_change_list,
+      EntityChangeList entity_changes) override;
+
+  void LoadMetadata(MetadataCallback callback) override;
+
+  void GetData(ClientKeyList client_keys, DataCallback callback) override;
+
+  void GetAllData(DataCallback callback) override;
+
+  std::string GetClientTag(const EntityData& entity_data) override;
+};
+
+}  // namespace syncer_v2
+
+#endif  // SYNC_INTERNAL_API_PUBLIC_TEST_FAKE_MODEL_TYPE_SERVICE_H_