Use PowerSaveBlocker for audio and video on Chrome OS.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 62deecd922ed2890dd26c19932aac7c34d2c72ea..7dacc0f11ec46f7cb0214832256329eeb2b0afe5 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -3162,26 +3162,22 @@ void WebContentsImpl::OnUpdateFaviconURL(
 }
 
 void WebContentsImpl::CreateAudioPowerSaveBlocker() {
-  // ChromeOS has its own way of handling power save blocks for media.
-#if !defined(OS_CHROMEOS)
   DCHECK(!audio_power_save_blocker_);
   audio_power_save_blocker_ = PowerSaveBlocker::Create(
-      PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension, "Playing Audio");
-#endif
+      PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension,
+      PowerSaveBlocker::kReasonAudioPlayback, "Playing audio");
 }
 
 void WebContentsImpl::CreateVideoPowerSaveBlocker() {
-  // ChromeOS has its own way of handling power save blocks for media.
-#if !defined(OS_CHROMEOS)
   DCHECK(!video_power_save_blocker_);
   DCHECK(!active_video_players_.empty());
   video_power_save_blocker_ = PowerSaveBlocker::Create(
-      PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep, "Playing Video");
+      PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep,
+      PowerSaveBlocker::kReasonVideoPlayback, "Playing video");
 #if defined(OS_ANDROID)
   static_cast<PowerSaveBlockerImpl*>(video_power_save_blocker_.get())
       ->InitDisplaySleepBlocker(GetView()->GetNativeView());
 #endif
-#endif
 }
 
 void WebContentsImpl::MaybeReleasePowerSaveBlockers() {