[Sync] Move events files around a bit.

components/sync/engine/events/clear_server_data_request_event.h

-// 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 COMPONENTS_SYNC_ENGINE_EVENTS_CLEAR_SERVER_DATA_REQUEST_EVENT_H_
-#define COMPONENTS_SYNC_ENGINE_EVENTS_CLEAR_SERVER_DATA_REQUEST_EVENT_H_
-
-#include <memory>
-#include <string>
-
-#include "base/macros.h"
-#include "base/time/time.h"
-#include "base/values.h"
-#include "components/sync/engine/events/protocol_event.h"
-#include "components/sync/protocol/sync.pb.h"
-
-namespace syncer {
-
-// An event representing a ClearServerData request message sent to the server.
-class ClearServerDataRequestEvent : public ProtocolEvent {
- public:
-  ClearServerDataRequestEvent(base::Time timestamp,
-                              const sync_pb::ClientToServerMessage& request);
-  ~ClearServerDataRequestEvent() override;
-
-  base::Time GetTimestamp() const override;
-  std::string GetType() const override;
-  std::string GetDetails() const override;
-  std::unique_ptr<base::DictionaryValue> GetProtoMessage() const override;
-  std::unique_ptr<ProtocolEvent> Clone() const override;
-
-  static std::unique_ptr<base::DictionaryValue> ToValue(
-      const ProtocolEvent& event);
-
- private:
-  const base::Time timestamp_;
-  const sync_pb::ClientToServerMessage request_;
-
-  DISALLOW_COPY_AND_ASSIGN(ClearServerDataRequestEvent);
-};
-
-}  // namespace syncer
-
-#endif  // COMPONENTS_SYNC_ENGINE_EVENTS_CLEAR_SERVER_DATA_REQUEST_EVENT_H_