Non-Local Join for Media Router and Presentation API

chrome/browser/media/router/presentation_session_state_observer.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 "chrome/browser/media/router/presentation_session_state_observer.h"
 
 #include "chrome/browser/media/router/media_router.h"
 
 namespace media_router {
 
@@ skipping 16 matching lines @@
     tracked_route_ids_.push_back(route_id);
   InvokeCallback(route_id, content::PRESENTATION_SESSION_STATE_CONNECTED);
 }
 
 void PresentationSessionStateObserver::Reset() {
   tracked_route_ids_.clear();
   previous_route_ids_.clear();
 }
 
 void PresentationSessionStateObserver::OnRoutesUpdated(
-    const std::vector<MediaRoute>& routes) {
+    const MediaSource::Id source_id,
+    const std::vector<MediaRoute>& routes,
+    const std::vector<MediaRoute>& joinable_routes) {
+
+  if (source_id.compare(this->source_id()) != -1)
+    return;
+
   std::vector<MediaRoute::Id> current_route_ids_;
   current_route_ids_.reserve(routes.size());
   for (const MediaRoute& route : routes)
     current_route_ids_.push_back(route.media_route_id());
 
   for (auto it = tracked_route_ids_.begin(); it != tracked_route_ids_.end();
        /*no-op*/) {
     const MediaRoute::Id& route_id = *it;
     if (ContainsValue(previous_route_ids_, route_id) &&
         !ContainsValue(current_route_ids_, route_id)) {
@@ skipping 10 matching lines @@
 void PresentationSessionStateObserver::InvokeCallback(
     const MediaRoute::Id& route_id,
     content::PresentationSessionState new_state) {
   const content::PresentationSessionInfo* session_info =
       route_id_to_presentation_->Get(route_id);
   if (session_info)
     state_changed_callback_.Run(*session_info, new_state);
 }
 
 }  // namespace media_router