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

remoting/host/remoting_me2me_host.cc

Index: remoting/host/remoting_me2me_host.cc
diff --git a/remoting/host/remoting_me2me_host.cc b/remoting/host/remoting_me2me_host.cc
index dd5e5fc8af3822341a54e20f43afcc882367729c..5ef94bc4c91f44bfd052f49517cac5abe4cf04ca 100644
--- a/remoting/host/remoting_me2me_host.cc
+++ b/remoting/host/remoting_me2me_host.cc
@@ -71,6 +71,7 @@
 #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"
@@ -401,6 +402,7 @@ class HostProcess : public ConfigWatcher::Delegate,
       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_;
 
@@ -1472,6 +1474,9 @@ void HostProcess::StartHost() {
       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(