[Sync] Move //sync to //components/sync.

sync/util/time.h

-// Copyright 2012 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.
-//
-// Time-related sync functions.
-
-#ifndef SYNC_UTIL_TIME_H_
-#define SYNC_UTIL_TIME_H_
-
-#include <stdint.h>
-
-#include <string>
-
-#include "base/time/time.h"
-#include "sync/base/sync_export.h"
-
-namespace syncer {
-
-// Converts a time object to the format used in sync protobufs (ms
-// since the Unix epoch).
-SYNC_EXPORT int64_t TimeToProtoTime(const base::Time& t);
-
-// Converts a time field from sync protobufs to a time object.
-SYNC_EXPORT base::Time ProtoTimeToTime(int64_t proto_t);
-
-SYNC_EXPORT std::string GetTimeDebugString(const base::Time& t);
-
-}  // namespace syncer
-
-#endif  // SYNC_UTIL_TIME_H_