Revert of Disable pausing background video-only players on desktop.

media/blink/webmediaplayer_impl.cc

Index: media/blink/webmediaplayer_impl.cc
diff --git a/media/blink/webmediaplayer_impl.cc b/media/blink/webmediaplayer_impl.cc
index ffe116b5605b10b7fcf73d87a56edfe7a73e72a8..fa8a90108e049dc4b1464fe5885913816da312dd 100644
--- a/media/blink/webmediaplayer_impl.cc
+++ b/media/blink/webmediaplayer_impl.cc
@@ -2153,16 +2153,6 @@
   client_->activateViewportIntersectionMonitoring(activate);
 }
 
-// TODO(avayvod): Revert after merging into 58 so we keep getting data on the
-// background video pause behavior on desktop. See https://crbug.com/699106.
-#if !defined(OS_ANDROID)
-
-bool WebMediaPlayerImpl::ShouldPauseVideoWhenHidden() const {
-  return false;
-}
-
-#else  // !defined(OS_ANDROID)
-
 bool WebMediaPlayerImpl::ShouldPauseVideoWhenHidden() const {
   // If suspending background video, pause any video that's not remoted or
   // not unlocked to play in the background.
@@ -2185,8 +2175,6 @@
   return IsBackgroundVideoTrackOptimizationEnabled() && !hasAudio() &&
          IsBackgroundOptimizationCandidate();
 }
-
-#endif  // !defined(OS_ANDROID)
 
 bool WebMediaPlayerImpl::ShouldDisableVideoWhenHidden() const {
   // This optimization is behind the flag on all platforms.