Detect change on video/viewport intersection when rendered remotely

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 0179a9c1a5568f865c138447966a8f0d0b83418a..d1c5da6018df1df2fa69e92ac0a6002150f6e3ba 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -2866,6 +2866,9 @@ blink::WebMediaPlayer* RenderFrameImpl::createMediaPlayer(
 #if BUILDFLAG(ENABLE_MEDIA_REMOTING)
   remoting_controller_ptr->SetSwitchRendererCallback(base::Bind(
       &media::WebMediaPlayerImpl::ScheduleRestart, media_player->AsWeakPtr()));
+  remoting_controller_ptr->SetRemoteSinkAvailableChangedCallback(base::Bind(
+      &media::WebMediaPlayerImpl::ActivateViewportIntersectionMonitoring,
+      media_player->AsWeakPtr()));
 #endif
   return media_player;
 }