[Chromoting] Use device::PowerSaveBlocker to block screen saver

remoting/host/remoting_me2me_host.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.
 //
 // This file implements a standalone host process for Me2Me.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 53 matching lines @@
 #include "remoting/host/host_status_logger.h"
 #include "remoting/host/input_injector.h"
 #include "remoting/host/ipc_desktop_environment.h"
 #include "remoting/host/ipc_host_event_logger.h"
 #include "remoting/host/logging.h"
 #include "remoting/host/me2me_desktop_environment.h"
 #include "remoting/host/oauth_token_getter_impl.h"
 #include "remoting/host/pairing_registry_delegate.h"
 #include "remoting/host/pin_hash.h"
 #include "remoting/host/policy_watcher.h"
+#include "remoting/host/screen_saver_blocker.h"
 #include "remoting/host/security_key/gnubby_auth_handler.h"
 #include "remoting/host/security_key/gnubby_extension.h"
 #include "remoting/host/service_urls.h"
 #include "remoting/host/shutdown_watchdog.h"
 #include "remoting/host/signaling_connector.h"
 #include "remoting/host/single_window_desktop_environment.h"
 #include "remoting/host/switches.h"
 #include "remoting/host/third_party_auth_config.h"
 #include "remoting/host/token_validator_factory_impl.h"
 #include "remoting/host/usage_stats_consent.h"
@@ skipping 310 matching lines @@
   std::unique_ptr<HeartbeatSender> heartbeat_sender_;
 #if defined(USE_GCD)
   std::unique_ptr<GcdStateUpdater> gcd_state_updater_;
   std::unique_ptr<PushNotificationSubscriber> gcd_subscriber_;
 #endif  // defined(USE_GCD)
 
   std::unique_ptr<HostChangeNotificationListener>
       host_change_notification_listener_;
   std::unique_ptr<HostStatusLogger> host_status_logger_;
   std::unique_ptr<HostEventLogger> host_event_logger_;
+  std::unique_ptr<ScreenSaverBlocker> screen_saver_blocker_;
 
   std::unique_ptr<ChromotingHost> host_;
 
   // Used to keep this HostProcess alive until it is shutdown.
   scoped_refptr<HostProcess> self_;
 
 #if defined(REMOTING_MULTI_PROCESS)
   // Accessed on the UI thread.
   std::unique_ptr<IPC::ChannelProxy> daemon_channel_;
 
@@ skipping 1051 matching lines @@
   host_->SetMaximumSessionDuration(base::TimeDelta::FromHours(20));
 #endif
 
   host_change_notification_listener_.reset(new HostChangeNotificationListener(
       this, host_id_, signal_strategy_.get(), directory_bot_jid_));
 
   host_status_logger_.reset(new HostStatusLogger(
       host_->AsWeakPtr(), ServerLogEntry::ME2ME,
       signal_strategy_.get(), directory_bot_jid_));
 
+  screen_saver_blocker_.reset(
+      new ScreenSaverBlocker(host_->AsWeakPtr(), context_->Copy()));

[Sergey Ulanov, 2016/07/08 21:31:47]

Please don't use ChromotingHostContext::Copy(). Ideally we should remove that
method. Context shouldn't be copyable.

[Hzj_jie, 2016/07/10 22:04:57]

Done.

+
   // Set up reporting the host status notifications.
 #if defined(REMOTING_MULTI_PROCESS)
   host_event_logger_.reset(
       new IpcHostEventLogger(host_->AsWeakPtr(), daemon_channel_.get()));
 #else  // !defined(REMOTING_MULTI_PROCESS)
   host_event_logger_ =
       HostEventLogger::Create(host_->AsWeakPtr(), kApplicationName);
 #endif  // !defined(REMOTING_MULTI_PROCESS)
 
   host_->SetEnableCurtaining(curtain_required_);
@@ skipping 43 matching lines @@
 void HostProcess::GoOffline(const std::string& host_offline_reason) {
   DCHECK(context_->network_task_runner()->BelongsToCurrentThread());
   DCHECK(!host_offline_reason.empty());
   DCHECK((state_ == HOST_GOING_OFFLINE_TO_STOP) ||
          (state_ == HOST_GOING_OFFLINE_TO_RESTART));
 
   // Shut down everything except the HostSignalingManager.
   host_.reset();
   host_event_logger_.reset();
   host_status_logger_.reset();
   host_change_notification_listener_.reset();

[Sergey Ulanov, 2016/07/08 21:31:47]

Reset screen_saver_blocker_ here too.

[Hzj_jie, 2016/07/10 22:04:57]

Done.

 
   // Before shutting down HostSignalingManager, send the |host_offline_reason|
   // if possible (i.e. if we have the config).
   if (!serialized_config_.empty()) {
     if (!signal_strategy_)
       InitializeSignaling();
 
     HOST_LOG << "SendHostOfflineReason: sending " << host_offline_reason << ".";
     if (heartbeat_sender_) {
       heartbeat_sender_->SetHostOfflineReason(
@@ skipping 106 matching lines @@
       base::TimeDelta::FromSeconds(kShutdownTimeoutSeconds));
   new HostProcess(std::move(context), &exit_code, &shutdown_watchdog);
 
   // Run the main (also UI) message loop until the host no longer needs it.
   message_loop.Run();
 
   return exit_code;
 }
 
 }  // namespace remoting