[GCM] Fix gcm login to properly identify chrome

google_apis/gcm/tools/mcs_probe.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.
 //
 // A standalone tool for testing MCS connections and the MCS client on their
 // own.
 
 #include <cstddef>
 #include <cstdio>
 #include <string>
@@ skipping 288 matching lines @@
   connection_factory_.reset(
       new ConnectionFactoryImpl(GURL("https://" + net::HostPortPair(
                                     server_host_, server_port_).ToString()),
                                 kDefaultBackoffPolicy,
                                 network_session_,
                                 &net_log_));
   gcm_store_.reset(
       new GCMStoreImpl(true,
                        gcm_store_path_,
                        file_thread_.message_loop_proxy()));
-  mcs_client_.reset(new MCSClient(&clock_,
+  mcs_client_.reset(new MCSClient("probe",
+                                  &clock_,
                                   connection_factory_.get(),
                                   gcm_store_.get()));
   run_loop_.reset(new base::RunLoop());
   gcm_store_->Load(base::Bind(&MCSProbe::LoadCallback,
                               base::Unretained(this)));
   run_loop_->Run();
 }
 
 void MCSProbe::LoadCallback(scoped_ptr<GCMStore::LoadResult> load_result) {
   DCHECK(load_result->success);
@@ skipping 167 matching lines @@
 
   return 0;
 }
 
 }  // namespace
 }  // namespace gcm
 
 int main(int argc, char* argv[]) {
   return gcm::MCSProbeMain(argc, argv);
 }