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

content/renderer/presentation/presentation_dispatcher.cc

Index: content/renderer/presentation/presentation_dispatcher.cc
diff --git a/content/renderer/presentation/presentation_dispatcher.cc b/content/renderer/presentation/presentation_dispatcher.cc
index a5b4562f70b15ba1ea58c6760719206a7369f8e7..e7f49e1434deb75bedaae1f85c2fbf1f3a1bbcaa 100644
--- a/content/renderer/presentation/presentation_dispatcher.cc
+++ b/content/renderer/presentation/presentation_dispatcher.cc
@@ -227,12 +227,14 @@ void PresentationDispatcher::sendBlobData(
 }
 
 void PresentationDispatcher::DoSendMessage(SendMessageRequest* request) {
-  ConnectToPresentationServiceIfNeeded();
-
-  presentation_service_->SendConnectionMessage(
-      std::move(request->session_info), std::move(request->message),
-      base::Bind(&PresentationDispatcher::HandleSendMessageRequests,
-                 base::Unretained(this)));
+  DCHECK(request->connection_proxy);
+  // TODO(crbug.com/684116): Remove static_cast after moving message queue logic
+  // from PresentationDispatcher to PresentationConnectionProxy.
+  static_cast<const PresentationConnectionProxy*>(request->connection_proxy)
+      ->SendConnectionMessage(
+          std::move(request->message),
+          base::Bind(&PresentationDispatcher::HandleSendMessageRequests,
+                     base::Unretained(this)));
 }
 
 void PresentationDispatcher::HandleSendMessageRequests(bool success) {
@@ -256,6 +258,20 @@ void PresentationDispatcher::HandleSendMessageRequests(bool success) {
   }
 }
 
+void PresentationDispatcher::SetControllerConnection(
+    blink::mojom::PresentationSessionInfoPtr session_info,
+    blink::WebPresentationConnection* connection) {
+  DCHECK(connection);
+
+  auto* controller_connection_proxy = new ControllerConnectionProxy(connection);
+  connection->bindProxy(base::WrapUnique(controller_connection_proxy));
+
+  ConnectToPresentationServiceIfNeeded();
+  presentation_service_->SetPresentationConnection(
+      session_info.Clone(), controller_connection_proxy->Bind(),
+      controller_connection_proxy->MakeRemoteRequest());
+}
+
 void PresentationDispatcher::closeSession(
     const blink::WebURL& presentationUrl,
     const blink::WebString& presentationId) {
@@ -488,11 +504,17 @@ void PresentationDispatcher::OnDefaultSessionStarted(
     return;
 
   if (!session_info.is_null()) {
-    presentation_service_->ListenForConnectionMessages(session_info.Clone());
     auto* connection = controller_->didStartDefaultSession(
         mojo::ConvertTo<blink::WebPresentationSessionInfo>(session_info));
-    connection->bindProxy(
-        base::MakeUnique<ControllerConnectionProxy>(connection));
+
+    if (connection) {
+      SetControllerConnection(session_info.Clone(), connection);
+      // Change blink connection state to 'connected' before listening to
+      // connection message. Remove ListenForConnectionMessage() after
+      // TODO(crbug.com/687011): use BrowserPresentationConnectionProxy to send
+      // message from route to blink connection.
+      presentation_service_->ListenForConnectionMessages(session_info.Clone());
+    }
   }
 }
 
@@ -510,13 +532,14 @@ void PresentationDispatcher::OnSessionCreated(
   }
 
   DCHECK(!session_info.is_null());
-  presentation_service_->ListenForConnectionMessages(session_info.Clone());
   callback->onSuccess(
       mojo::ConvertTo<blink::WebPresentationSessionInfo>(session_info));
-
-  auto* connection = callback->getConnection();
-  connection->bindProxy(
-      base::MakeUnique<ControllerConnectionProxy>(connection));
+  // Change blink connection state to 'connected' before listening to
+  // connection message. Remove ListenForConnectionMessage() after
+  // TODO(crbug.com/687011): use BrowserPresentationConnectionProxy to send
+  // message from route to blink connection.
+  SetControllerConnection(session_info.Clone(), callback->getConnection());
+  presentation_service_->ListenForConnectionMessages(session_info.Clone());
 }
 
 void PresentationDispatcher::OnReceiverConnectionAvailable(
@@ -524,6 +547,7 @@ void PresentationDispatcher::OnReceiverConnectionAvailable(
     blink::mojom::PresentationConnectionPtr controller_connection_ptr,
     blink::mojom::PresentationConnectionRequest receiver_connection_request) {
   DCHECK(receiver_);
+
   // Bind receiver_connection_proxy with PresentationConnection in receiver
   // page.
   auto* connection = receiver_->onReceiverConnectionAvailable(