Gets presentation ID from route ID upon route creation, and overrides previous presentation ID with…

content/renderer/presentation/presentation_dispatcher.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/presentation/presentation_dispatcher.h"
 
 #include "base/logging.h"
 #include "content/common/presentation/presentation_service.mojom.h"
 #include "content/public/common/presentation_constants.h"
 #include "content/public/common/service_registry.h"
@@ skipping 326 matching lines @@
   if (!error.is_null()) {
     DCHECK(session_info.is_null());
     callback->onError(new blink::WebPresentationError(
         GetWebPresentationErrorTypeFromMojo(error->error_type),
         blink::WebString::fromUTF8(error->message)));
     return;
   }
 
   DCHECK(!session_info.is_null());
   callback->onSuccess(new PresentationSessionClient(session_info.Pass()));
+  presentation_service_->ListenForSessionMessages(
+      base::Bind(&PresentationDispatcher::OnSessionMessagesReceived,
+                 base::Unretained(this)));
 }
 
 void PresentationDispatcher::OnSessionStateChange(
     presentation::PresentationSessionInfoPtr session_info,
     presentation::PresentationSessionState session_state) {
   if (!controller_)
     return;
 
   presentation_service_->ListenForSessionStateChange(base::Bind(
       &PresentationDispatcher::OnSessionStateChange,
@@ skipping 40 matching lines @@
 
   // TODO(imcheng): Uncomment these once they are implemented on the browser
   // side. (crbug.com/459006)
   /*
   presentation_service_->ListenForDefaultSessionStart(base::Bind(
       &PresentationDispatcher::OnDefaultSessionStarted,
       base::Unretained(this)));
   presentation_service_->ListenForSessionStateChange(base::Bind(
       &PresentationDispatcher::OnSessionStateChange,
       base::Unretained(this)));
-  presentation_service_->ListenForSessionMessages(
-      base::Bind(&PresentationDispatcher::OnSessionMessagesReceived,
-      base::Unretained(this)));
   */
 }
 
 }  // namespace content