| // 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. | 
 |  | 
 | // Update proto_value_conversions{.h,.cc,_unittest.cc} if you change | 
 | // any fields in this file. | 
 |  | 
 | syntax = "proto2"; | 
 |  | 
 | option optimize_for = LITE_RUNTIME; | 
 | option retain_unknown_fields = true; | 
 |  | 
 | 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. | 
 |   optional int64 backup_timestamp = 6; | 
 |  | 
 |   // 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; | 
 | } |