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

chrome/browser/media/router/presentation_service_delegate_impl.cc

Index: chrome/browser/media/router/presentation_service_delegate_impl.cc
diff --git a/chrome/browser/media/router/presentation_service_delegate_impl.cc b/chrome/browser/media/router/presentation_service_delegate_impl.cc
index f401199a5f07ddcfd1c18b133169f25242087e4a..b1adae4f9b482f87b8656a38f4b0b50c9ae19b4c 100644
--- a/chrome/browser/media/router/presentation_service_delegate_impl.cc
+++ b/chrome/browser/media/router/presentation_service_delegate_impl.cc
@@ -174,7 +174,7 @@ class PresentationFrame {
   RenderFrameHostId render_frame_host_id_;
 
   // References to the owning WebContents, and the corresponding MediaRouter.
-  const content::WebContents* web_contents_;
+  content::WebContents* web_contents_;
   MediaRouter* router_;
 
   DelegateObserver* delegate_observer_;
@@ -257,8 +257,14 @@ bool PresentationFrame::HasScreenAvailabilityListenerForTest(
 }
 
 void PresentationFrame::Reset() {
-  for (const auto& pid_route_id : presentation_id_to_route_id_)
+  auto offscreen_presentation_manager = OffscreenPresentationManagerFactory::
+      GetOrCreateForControllerBrowserContext(web_contents_);
+
+  for (const auto& pid_route_id : presentation_id_to_route_id_) {
+    offscreen_presentation_manager->UnregisterOffscreenPresentationController(
+        pid_route_id.first, render_frame_host_id_);
     router_->DetachRoute(pid_route_id.second);
+  }
 
   presentation_id_to_route_id_.clear();
   url_to_sinks_observer_.clear();