[Presentation API] (1-UA) fire PresentationConnection onterminate event if receiver page gets destr…

content/browser/presentation/presentation_service_impl.cc

Index: content/browser/presentation/presentation_service_impl.cc
diff --git a/content/browser/presentation/presentation_service_impl.cc b/content/browser/presentation/presentation_service_impl.cc
index 8c3bdab4e699585fcb73132dc6746bfb77ef09c2..77e2fd7c3cc170abf0fe322505a53a6ec9df5f03 100644
--- a/content/browser/presentation/presentation_service_impl.cc
+++ b/content/browser/presentation/presentation_service_impl.cc
@@ -577,6 +577,13 @@ void PresentationServiceImpl::Reset() {
   if (auto delegate = GetPresentationServiceDelegate())
     delegate->Reset(render_process_id_, render_frame_id_);
 
+  if (receiver_delegate_) {
+    PresentationSessionInfo dummy_session(GURL("fake_url"), "fake_id", true);
+    OnConnectionStateChanged(dummy_session,
+                             PresentationConnectionStateChangeInfo(
+                                 PRESENTATION_CONNECTION_STATE_TERMINATED));
+  }
+
   default_presentation_urls_.clear();
 
   screen_availability_listeners_.clear();