Fix sync_client to work with oauth2 tokens.

sync/tools/sync_client.cc

 // 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.
 
 #include <cstddef>
 #include <cstdio>
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
@@ skipping 177 matching lines @@
 void LogUnrecoverableErrorContext() {
   base::debug::StackTrace().Print();
 }
 
 notifier::NotifierOptions ParseNotifierOptions(
     const CommandLine& command_line,
     const scoped_refptr<net::URLRequestContextGetter>&
         request_context_getter) {
   notifier::NotifierOptions notifier_options;
   notifier_options.request_context_getter = request_context_getter;
+  notifier_options.auth_mechanism = "X-OAUTH2";
 
   if (command_line.HasSwitch(kXmppHostPortSwitch)) {
     notifier_options.xmpp_host_port =
         net::HostPortPair::FromString(
             command_line.GetSwitchValueASCII(kXmppHostPortSwitch));
     LOG(INFO) << "Using " << notifier_options.xmpp_host_port.ToString()
               << " for test sync notification server.";
   }
 
   notifier_options.try_ssltcp_first =
@@ skipping 178 matching lines @@
   io_thread.Stop();
   return 0;
 }
 
 }  // namespace
 }  // namespace syncer
 
 int main(int argc, char* argv[]) {
   return syncer::SyncClientMain(argc, argv);
 }