Actual cancelation of registration when cancel buttons pressed

chrome/browser/local_discovery/privet_constants.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/local_discovery/privet_constants.h"
 
 namespace local_discovery {
 
 const char kPrivetKeyError[] = "error";
 const char kPrivetInfoKeyToken[] = "x-privet-token";
 const char kPrivetKeyDeviceID[] = "device_id";
 const char kPrivetKeyClaimURL[] = "claim_url";
 const char kPrivetKeyClaimToken[] = "token";
 const char kPrivetKeyTimeout[] = "timeout";
 
 const char kPrivetErrorDeviceBusy[] = "device_busy";
 const char kPrivetErrorPendingUserAction[] = "pending_user_action";
 const char kPrivetErrorInvalidXPrivetToken[] = "invalid_x_privet_token";
 
 const char kPrivetActionStart[] = "start";
 const char kPrivetActionGetClaimToken[] = "getClaimToken";
 const char kPrivetActionComplete[] = "complete";
+const char kPrivetActionCancel[] = "cancel";
 
 const char kPrivetActionNameInfo[] = "info";
 
 extern const char kPrivetDefaultDeviceType[] = "_privet._tcp.local";
 extern const char kPrivetSubtypeTemplate[] = "%s._sub._privet._tcp.local";
 
 const char kPrivetTxtKeyName[] = "ty";
 const char kPrivetTxtKeyDescription[] = "note";
 const char kPrivetTxtKeyURL[] = "url";
 const char kPrivetTxtKeyType[] = "type";
 const char kPrivetTxtKeyID[] = "id";
 const char kPrivetTxtKeyConnectionState[] = "cs";
 
 const char kPrivetConnectionStatusOnline[] = "online";
 const char kPrivetConnectionStatusOffline[] = "offline";
 const char kPrivetConnectionStatusConnecting[] = "connecting";
 const char kPrivetConnectionStatusNotConfigured[] = "not-configured";
 
 }  // namespace local_discovery