Revert of Remove secondary player from Media Sessions

content/browser/media/android/media_web_contents_observer_android.cc

Index: content/browser/media/android/media_web_contents_observer_android.cc
diff --git a/content/browser/media/android/media_web_contents_observer_android.cc b/content/browser/media/android/media_web_contents_observer_android.cc
index 581cf41165e81e281d3cd610b2594d48d99e13fd..819c6b4ba367dbb97644167f391904b91b90c730 100644
--- a/content/browser/media/android/media_web_contents_observer_android.cc
+++ b/content/browser/media/android/media_web_contents_observer_android.cc
@@ -100,13 +100,6 @@
              render_frame_host, delegate_id)) != media_session_map_.end();
 }
 
-void MediaWebContentsObserverAndroid::DisconnectMediaSession(
-    RenderFrameHost* render_frame_host,
-    int delegate_id) {
-  session_controllers_manager()->OnEnd(
-      MediaPlayerId(render_frame_host, delegate_id));
-}
-
 #if defined(VIDEO_HOLE)
 void MediaWebContentsObserverAndroid::OnFrameInfoUpdated() {
   for (auto it = media_player_managers_.begin();