components/sync/protocol/device_info_specifics.proto

// Copyright (c) 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.
//
// Sync protocol datatype extension for nigori keys.

// If you change or add any fields in this file, update proto_visitors.h and
// potentially proto_enum_conversions.{h, cc}.

syntax = "proto2";

option optimize_for = LITE_RUNTIME;

package sync_pb;

import "sync_enums.proto";

// Information about a device that is running a sync-enabled Chrome browser.  We
// are mapping the per-client cache guid to more specific information about the
// device.
message DeviceInfoSpecifics {
  // The cache_guid created to identify a sync client on this device.
  optional string cache_guid = 1;

  // A non-unique but human readable name to describe this client.
  optional string client_name = 2;

  // The platform of the device.
  optional SyncEnums.DeviceType device_type = 3;

  // The UserAgent used when contacting the Chrome Sync server.
  optional string sync_user_agent = 4;

  // The Chrome instance's version.  Updated (if necessary) on every startup.
  optional string chrome_version = 5;

  // Last time when pre-sync data on the device was saved. The device can be
  // restored to state back to this time. In millisecond since UNIX epoch.
  // DEPRECATED in M50.
  optional int64 deprecated_backup_timestamp = 6 [deprecated = true];

  // Device_id that is stable until user signs out. This device_id is used for
  // annotating login scoped refresh token.
  optional string signin_scoped_device_id = 7;

  // This field is updated to be the current time periodically, and is also set
  // to the current time whenever another field changes. By examining the
  // difference between this field and the current time, it should be possible
  // to reason about the inactivity of any device that was syncing at one time.
  optional int64 last_updated_timestamp = 8;
}