Reland - Replace FakeServer's implementation with LoopbackServer invocations.

components/sync/test/fake_server/unique_client_entity.h

Index: components/sync/test/fake_server/unique_client_entity.h
diff --git a/components/sync/test/fake_server/unique_client_entity.h b/components/sync/test/fake_server/unique_client_entity.h
deleted file mode 100644
index c9c424539c1bb0b55136acb94383a0574c4d46e8..0000000000000000000000000000000000000000
--- a/components/sync/test/fake_server/unique_client_entity.h
+++ /dev/null
@@ -1,64 +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 COMPONENTS_SYNC_TEST_FAKE_SERVER_UNIQUE_CLIENT_ENTITY_H_
-#define COMPONENTS_SYNC_TEST_FAKE_SERVER_UNIQUE_CLIENT_ENTITY_H_
-
-#include <stdint.h>
-
-#include <memory>
-#include <string>
-
-#include "components/sync/base/model_type.h"
-#include "components/sync/test/fake_server/fake_server_entity.h"
-
-namespace sync_pb {
-class EntitySpecifics;
-class SyncEntity;
-}  // namespace sync_pb
-
-namespace fake_server {
-
-// An entity that is unique per client account.
-//
-// TODO(pvalenzuela): Reconsider the naming of this class. In some cases, this
-// type is used to represent entities where the unique client tag is irrelevant
-// (e.g., Autofill Wallet).
-class UniqueClientEntity : public FakeServerEntity {
- public:
-  UniqueClientEntity(const std::string& id,
-                     const std::string& client_defined_unique_tag,
-                     syncer::ModelType model_type,
-                     int64_t version,
-                     const std::string& name,
-                     const sync_pb::EntitySpecifics& specifics,
-                     int64_t creation_time,
-                     int64_t last_modified_time);
-
-  ~UniqueClientEntity() override;
-
-  // Factory function for creating a UniqueClientEntity.
-  static std::unique_ptr<FakeServerEntity> Create(
-      const sync_pb::SyncEntity& client_entity);
-
-  // Factory function for creating a UniqueClientEntity for use in the
-  // FakeServer injection API.
-  static std::unique_ptr<FakeServerEntity> CreateForInjection(
-      const std::string& name,
-      const sync_pb::EntitySpecifics& entity_specifics);
-
-  // FakeServerEntity implementation.
-  bool RequiresParentId() const override;
-  std::string GetParentId() const override;
-  void SerializeAsProto(sync_pb::SyncEntity* proto) const override;
-
- private:
-  // These member values have equivalent fields in SyncEntity.
-  int64_t creation_time_;
-  int64_t last_modified_time_;
-};
-
-}  // namespace fake_server
-
-#endif  // COMPONENTS_SYNC_TEST_FAKE_SERVER_UNIQUE_CLIENT_ENTITY_H_