Make the video layer visibility configurable in OverlayFullscreenVideo mode

content/renderer/media/android/webmediaplayer_android.cc

Index: content/renderer/media/android/webmediaplayer_android.cc
diff --git a/content/renderer/media/android/webmediaplayer_android.cc b/content/renderer/media/android/webmediaplayer_android.cc
index 7adb15e764c5066242f2bc070c7ab1abe9077474..6a2c8bb900e6dda82ef6abe71d23df4b61e8da8d 100644
--- a/content/renderer/media/android/webmediaplayer_android.cc
+++ b/content/renderer/media/android/webmediaplayer_android.cc
@@ -1047,7 +1047,6 @@ void WebMediaPlayerAndroid::OnDidExitFullscreen() {
     player_manager_->RequestExternalSurface(player_id_, last_computed_rect_);
 #endif  // defined(VIDEO_HOLE)
   is_fullscreen_ = false;
-  ReallocateVideoFrame();
   client_->repaint();
 }
 
@@ -1208,8 +1207,6 @@ void WebMediaPlayerAndroid::DrawRemotePlaybackText(
 
 void WebMediaPlayerAndroid::ReallocateVideoFrame() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
-
-  if (is_fullscreen_) return;
   if (needs_external_surface_) {
     // VideoFrame::CreateHoleFrame is only defined under VIDEO_HOLE.
 #if defined(VIDEO_HOLE)
@@ -1632,8 +1629,9 @@ void WebMediaPlayerAndroid::SetCdmReadyCB(
     SetCdmInternal(base::Bind(&media::IgnoreCdmAttached));
 }
 
-bool WebMediaPlayerAndroid::supportsOverlayFullscreenVideo() {
-  return true;
+WebMediaPlayer::OverlayFullscreenVideoMode
+WebMediaPlayerAndroid::getOverlayFullscreenVideoMode() {
+  return WebMediaPlayer::OverlayFullscreenVideoMode::VideoLayerInvisible;
 }
 
 void WebMediaPlayerAndroid::enteredFullscreen() {
@@ -1642,16 +1640,6 @@ void WebMediaPlayerAndroid::enteredFullscreen() {
   SetNeedsEstablishPeer(false);
   is_fullscreen_ = true;
   suppress_deleting_texture_ = false;
-
-  // Create a transparent video frame. Blink will already have made the
-  // background transparent because we returned true from
-  // supportsOverlayFullscreenVideo(). By making the video frame transparent,
-  // as well, everything in the LayerTreeView will be transparent except for
-  // media controls. The video will be on visible on the underlaid surface.
-  if (!fullscreen_frame_)
-    fullscreen_frame_ = VideoFrame::CreateTransparentFrame(gfx::Size(1, 1));
-  SetCurrentFrameInternal(fullscreen_frame_);
-  client_->repaint();
 }
 
 bool WebMediaPlayerAndroid::IsHLSStream() const {