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

components/sync_driver/sync_util.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_DRIVER_SYNC_UTIL_H_
-#define COMPONENTS_SYNC_DRIVER_SYNC_UTIL_H_
-
-#include <string>
-
-#include "components/version_info/version_info.h"
-
-class GURL;
-
-namespace base {
-class CommandLine;
-}
-
-namespace internal {
-
-// Default sync server URL. Visible for testing.
-extern const char* kSyncServerUrl;
-
-// Sync server URL for dev channel users. Visible for testing.
-extern const char* kSyncDevServerUrl;
-
-// Formats user agent string from system string and channel. Visible for
-// testing.
-std::string FormatUserAgentForSync(const std::string& system,
-                                   version_info::Channel channel);
-
-}  // namespace internal
-
-GURL GetSyncServiceURL(const base::CommandLine& command_line,
-                       version_info::Channel channel);
-
-// Helper to construct a user agent string (ASCII) suitable for use by
-// the syncapi for any HTTP communication. This string is used by the sync
-// backend for classifying client types when calculating statistics.
-std::string MakeUserAgentForSync(version_info::Channel channel, bool is_tablet);
-
-#endif  // COMPONENTS_SYNC_DRIVER_SYNC_UTIL_H_