[Presentation API] (5th) (1-UA) integrate controller and receiver side for 1-UA messaging

chrome/browser/media/router/offscreen_presentation_manager.cc

Index: chrome/browser/media/router/offscreen_presentation_manager.cc
diff --git a/chrome/browser/media/router/offscreen_presentation_manager.cc b/chrome/browser/media/router/offscreen_presentation_manager.cc
index 1cb996ae22ef9a20c4cc34ed23629e3f353fd172..abd5cd37f3488dbd2b25bf0fddfd48657bd84d00 100644
--- a/chrome/browser/media/router/offscreen_presentation_manager.cc
+++ b/chrome/browser/media/router/offscreen_presentation_manager.cc
@@ -61,9 +61,11 @@ void OffscreenPresentationManager::UnregisterOffscreenPresentationController(
 
   // Remove presentation if no controller and receiver.
   it->second->UnregisterController(render_frame_host_id);
-  if (it->second->pending_controllers_.size() == 0 &&
-      it->second->receiver_callback_.is_null())
+  if (!it->second->IsValid()) {
+    DLOG(WARNING) << __func__ << " no receiver callback has been registered to "
+                  << "[presentation_id]: " << presentation_id;
     offscreen_presentations_.erase(presentation_id);
+  }
 }
 
 void OffscreenPresentationManager::OnOffscreenPresentationReceiverCreated(