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

remoting/host/client_session.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/client_session.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
+#include "remoting/base/auto_thread_task_runner.h"
 #include "remoting/base/capabilities.h"
 #include "remoting/base/constants.h"
 #include "remoting/base/logging.h"
 #include "remoting/codec/audio_encoder.h"
 #include "remoting/codec/audio_encoder_opus.h"
 #include "remoting/codec/audio_encoder_verbatim.h"
 #include "remoting/host/audio_capturer.h"
 #include "remoting/host/audio_pump.h"
 #include "remoting/host/desktop_environment.h"
 #include "remoting/host/host_extension_session.h"
@@ skipping 28 matching lines @@
     return base::WrapUnique(new AudioEncoderOpus());
   }
 
   NOTREACHED();
   return nullptr;
 }
 
 }  // namespace
 
 ClientSession::ClientSession(
+    const ChromotingHostContext& context,
     EventHandler* event_handler,
-    scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner,
     std::unique_ptr<protocol::ConnectionToClient> connection,
     DesktopEnvironmentFactory* desktop_environment_factory,
     const base::TimeDelta& max_duration,
     scoped_refptr<protocol::PairingRegistry> pairing_registry,
     const std::vector<HostExtension*>& extensions)
     : event_handler_(event_handler),
       connection_(std::move(connection)),
       client_jid_(connection_->session()->jid()),
       desktop_environment_factory_(desktop_environment_factory),
       input_tracker_(&host_input_filter_),
       remote_input_filter_(&input_tracker_),
       mouse_clamping_filter_(&remote_input_filter_),
       disable_input_filter_(&mouse_clamping_filter_),
       disable_clipboard_filter_(clipboard_echo_filter_.host_filter()),
       client_clipboard_factory_(clipboard_echo_filter_.client_filter()),
       max_duration_(max_duration),
-      audio_task_runner_(audio_task_runner),
+      audio_task_runner_(context.audio_task_runner()),
       pairing_registry_(pairing_registry),
       // Note that |lossless_video_color_| defaults to true, but actually only
       // controls VP9 video stream color quality.
       lossless_video_color_(!base::CommandLine::ForCurrentProcess()->HasSwitch(
           kDisableI444SwitchName)),
+      power_save_blocker_(
+          device::PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep,
+          device::PowerSaveBlocker::kReasonVideoPlayback,
+          "Remoting session is active",
+          context.ui_task_runner(),
+          context.file_task_runner()),
       weak_factory_(this) {
   connection_->SetEventHandler(this);
 
   // Create a manager for the configured extensions, if any.
   extension_manager_.reset(new HostExtensionSessionManager(extensions, this));
 
 #if defined(OS_WIN)
   // LocalInputMonitorWin filters out an echo of the injected input before it
   // reaches |remote_input_filter_|.
   remote_input_filter_.SetExpectLocalEcho(false);
@@ skipping 379 matching lines @@
   }
 }
 
 void ClientSession::OnVideoFrameSent(protocol::VideoStream* stream,
                                      uint32_t frame_id,
                                      int64_t input_event_timestamp) {
   // TODO(sergeyu): Send a message to the client to notify about the new frame.
 }
 
 }  // namespace remoting