Updating the Chromoting Test Driver to target the test environment

remoting/test/fake_host_list_fetcher.cc

 // Copyright 2015 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 "remoting/test/fake_host_list_fetcher.h"
 
 namespace remoting {
 namespace test {
 
 FakeHostListFetcher::FakeHostListFetcher() {
 }
 
 FakeHostListFetcher::~FakeHostListFetcher() {
 }
 
 void FakeHostListFetcher::RetrieveHostlist(const std::string& access_token,
+                                           const std::string& target_url,
                                            const HostlistCallback& callback) {
   callback.Run(host_list_);
 }
 
 }  // namespace test
 }  // namespace remoting