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

remoting/host/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/config/win/manifest.gni")
 import("//build/util/version.gni")
 import("//chrome/version.gni")
 import("//remoting/remoting_enable.gni")
@@ skipping 90 matching lines @@
     "//build/config/compiler:wexit_time_destructors",
     "//remoting:version",
   ]
 
   defines = [ "WEBRTC_CHROMIUM_BUILD" ]
 
   deps = [
     "//base:i18n",
     "//components/policy:policy_component_common",
     "//crypto",
+    "//device/power_save_blocker",
     "//google_apis",
     "//ipc",
     "//remoting/base",
     "//remoting/protocol",
     "//remoting/resources",
     "//ui/base",
     "//ui/events:dom_keycode_converter",
     "//ui/events/platform",
   ]
 
@@ skipping 1431 matching lines @@
                       root_build_dir),
           rebase_path(outputs[0], root_build_dir),
         ]
       }
     } else {
       group("remoting_host_installation") {
       }
     }
   }
 }