[Media Router] Add CastMediaSinkService

chrome/browser/media/router/mojo/media_router_mojo_impl.cc

Index: chrome/browser/media/router/mojo/media_router_mojo_impl.cc
diff --git a/chrome/browser/media/router/mojo/media_router_mojo_impl.cc b/chrome/browser/media/router/mojo/media_router_mojo_impl.cc
index aaaa4264085e37f5b23b561f1976c2d33f100a9e..12a502523f4d6580d0dca4d69da15cc1ed9bf8dd 100644
--- a/chrome/browser/media/router/mojo/media_router_mojo_impl.cc
+++ b/chrome/browser/media/router/mojo/media_router_mojo_impl.cc
@@ -16,6 +16,7 @@
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/media/router/discovery/dial/dial_media_sink_service_proxy.h"
+#include "chrome/browser/media/router/discovery/mdns/cast_media_sink_service.h"
 #include "chrome/browser/media/router/issues_observer.h"
 #include "chrome/browser/media/router/media_router_factory.h"
 #include "chrome/browser/media/router/media_router_feature.h"
@@ -1012,8 +1013,7 @@ void MediaRouterMojoImpl::SyncStateToMediaRouteProvider() {
   }
 #endif
 
-  if (media_router::DialLocalDiscoveryEnabled())
-    StartDiscovery();
+  StartDiscovery();
 }
 
 void MediaRouterMojoImpl::EventPageWakeComplete(bool success) {
@@ -1083,14 +1083,25 @@ void MediaRouterMojoImpl::StartDiscovery() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   DVLOG_WITH_INSTANCE(1) << "StartDiscovery";
 
-  if (!dial_media_sink_service_proxy_) {
-    dial_media_sink_service_proxy_ = new DialMediaSinkServiceProxy(
-        base::Bind(&MediaRouterMojoImpl::ProvideSinks,
-                   weak_factory_.GetWeakPtr(), "dial"),
-        context_);
+  if (media_router::DialLocalDiscoveryEnabled()) {
+    if (!dial_media_sink_service_proxy_) {
+      dial_media_sink_service_proxy_ = new DialMediaSinkServiceProxy(
+          base::Bind(&MediaRouterMojoImpl::ProvideSinks,
+                     weak_factory_.GetWeakPtr(), "dial"),
+          context_);
+    }
+    dial_media_sink_service_proxy_->Start();
   }
 
-  dial_media_sink_service_proxy_->Start();
+  if (media_router::CastDiscoveryEnabled()) {
+    if (!cast_media_sink_service_) {
+      cast_media_sink_service_ = new CastMediaSinkService(
+          base::Bind(&MediaRouterMojoImpl::ProvideSinks,
+                     weak_factory_.GetWeakPtr(), "cast"),
+          context_);
+    }
+    cast_media_sink_service_->Start();
+  }
 }
 
 void MediaRouterMojoImpl::UpdateMediaSinks(