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 a3a185593a7ef6e83ba01e7bb7d61cf2faeb3a2e..5b8a5c72410d4e0e7fc749f528ac81bb9a4beace 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -2878,6 +2878,9 @@ 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::OnRemoteDisplayChanged,
+                 media_player->AsWeakPtr()));
 #endif
   return media_player;
 }