[Chromoting] Add a simple Windows app that registers and starts a host.

remoting/host/setup/host_starter.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 "remoting/host/setup/host_starter.h"
 
 #include "base/values.h"
 #include "crypto/random.h"
 #include "google_apis/google_api_keys.h"
 #include "remoting/host/pin_hash.h"
@@ skipping 75 matching lines @@
       new remoting::GaiaUserEmailFetcher(url_request_context_getter));
   scoped_ptr<remoting::ServiceClient> service_client(
       new remoting::ServiceClient(url_request_context_getter));
   scoped_ptr<remoting::DaemonController> daemon_controller(
       remoting::DaemonController::Create());
   return scoped_ptr<HostStarter>(
       new HostStarter(oauth_client.Pass(), user_email_fetcher.Pass(),
                       service_client.Pass(), daemon_controller.Pass()));
 }
 
-void HostStarter::StartHost(const std::string& host_name,
-                            const std::string& host_pin,
-                            bool consent_to_data_collection,
-                            const std::string& auth_code,
-                            CompletionCallback on_done) {
+void HostStarter::StartHost(
+    const std::string& host_name, const std::string& host_pin,
+    bool consent_to_data_collection, const std::string& auth_code,
+    CompletionCallback on_done,
+    scoped_refptr<base::SingleThreadTaskRunner> on_done_runner) {
   if (in_progress_) {
     on_done.Run(START_IN_PROGRESS);
     return;
   }
   in_progress_ = true;
   host_name_ = host_name;
   host_pin_ = host_pin;
   consent_to_data_collection_ = consent_to_data_collection;
   on_done_ = on_done;
+  on_done_runner_ = on_done_runner;
   // Map the authorization code to refresh and access tokens.
   oauth_client_->GetTokensFromAuthCode(oauth_client_info_, auth_code,
                                        kMaxGetTokensRetries, this);
 }
 
 void HostStarter::OnGetTokensResponse(
     const std::string& refresh_token,
     const std::string& access_token,
     int expires_in_seconds) {
   refresh_token_ = refresh_token;
@@ skipping 21 matching lines @@
   config->SetString("host_name", host_name_);
   config->SetString("private_key", key_pair_.GetAsString());
   config->SetString("host_secret_hash", host_secret_hash);
   daemon_controller_->SetConfigAndStart(
       config.Pass(), consent_to_data_collection_,
       base::Bind(&HostStarter::OnHostStarted,
                  base::Unretained(this)));
 }
 
 void HostStarter::OnHostStarted(DaemonController::AsyncResult result) {
-  on_done_.Run(
-      (result == DaemonController::RESULT_OK) ? START_COMPLETE : START_ERROR);
+  Result done_result = START_ERROR;
+  if (result == DaemonController::RESULT_OK)
+    done_result = START_COMPLETE;
+  on_done_runner_->PostTask(FROM_HERE, base::Bind(on_done_, done_result));
   // TODO(simonmorris): Unregister the host if we didn't start it.
   in_progress_ = false;
 }
 
 void HostStarter::OnOAuthError() {
   on_done_.Run(OAUTH_ERROR);
   in_progress_ = false;
 }
 
 void HostStarter::OnNetworkError(int response_code) {
   on_done_.Run(NETWORK_ERROR);
   in_progress_ = false;
 }
 
 void HostStarter::OnRefreshTokenResponse(
     const std::string& access_token,
     int expires_in_seconds) {
   NOTREACHED();
   on_done_.Run(OAUTH_ERROR);
   in_progress_ = false;
 }
 
 }  // namespace remoting