Use install_static::GetAppGuid in place of BrowserDistribution and AppRegistrationData.

chrome/installer/util/updating_app_registration_data.cc

 // Copyright 2014 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/installer/util/updating_app_registration_data.h"
 
 #include "chrome/installer/util/google_update_constants.h"
 
 UpdatingAppRegistrationData::UpdatingAppRegistrationData(
     const base::string16& app_guid) : app_guid_(app_guid) {}
 
 UpdatingAppRegistrationData::~UpdatingAppRegistrationData() {}
 
-base::string16 UpdatingAppRegistrationData::GetAppGuid() const {
-  return app_guid_;
-}
-
 base::string16 UpdatingAppRegistrationData::GetStateKey() const {
   return base::string16(google_update::kRegPathClientState)
       .append(1, L'\\')
       .append(app_guid_);
 }
 
 base::string16 UpdatingAppRegistrationData::GetStateMediumKey() const {
   return base::string16(google_update::kRegPathClientStateMedium)
       .append(1, L'\\')
       .append(app_guid_);
 }
 
 base::string16 UpdatingAppRegistrationData::GetVersionKey() const {
   return base::string16(google_update::kRegPathClients)
       .append(1, L'\\')
       .append(app_guid_);
 }