Tether: add TETHERING_TIMEOUT value to ConnectTetheringResponse.ResponseCode.

chromeos/components/tether/proto/tether.proto

 // Copyright 2017 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.
 
 // Definitions for tether API calls.
 
 syntax = "proto2";
 
 package chromeos.tether;
 
@@ skipping 67 matching lines @@
 
 // Next id: 1
 message ConnectTetheringRequest {}
 
 // Next id: 5
 message ConnectTetheringResponse {
   enum ResponseCode {
     UNKNOWN_ERROR = 0;
     SUCCESS = 1;
     PROVISIONING_FAILED = 2;
+    TETHERING_TIMEOUT = 3;
   }
 
   optional ResponseCode response_code = 1;
 
   // SSID for the new hotspot.
   optional string ssid = 2;
 
   // Password for the new hotspot.
   optional string password = 3;
 
   optional DeviceStatus device_status = 4;
 }
 
 // Next id: 1
 message KeepAliveTickle {}
 
 // Next id: 1
 message DisconnectTetheringRequest {}