Non-Local Join for Media Router and Presentation API

chrome/browser/media/router/media_routes_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/media_routes_observer.h"
 
 #include "base/logging.h"
 #include "chrome/browser/media/router/media_router.h"
 
 namespace media_router {
 
-MediaRoutesObserver::MediaRoutesObserver(MediaRouter* router)
-    : router_(router) {
+MediaRoutesObserver::MediaRoutesObserver(MediaRouter* router,
+    const MediaSource::Id source_id)
+    : router_(router),
+      source_id_(source_id) {
   DCHECK(router_);
   router_->RegisterMediaRoutesObserver(this);
 }
 
 MediaRoutesObserver::~MediaRoutesObserver() {
   router_->UnregisterMediaRoutesObserver(this);
 }
 
 }  // namespace media_router