[Media Router] Support dual discovery

chrome/common/media_router/discovery/media_sink_internal.h

Index: chrome/common/media_router/discovery/media_sink_internal.h
diff --git a/chrome/common/media_router/discovery/media_sink_internal.h b/chrome/common/media_router/discovery/media_sink_internal.h
index 25d7b617e0f18c79922be432c602358895d13386..206882f04ecb88c6ebfbeeeb5b630646e1cd4dc6 100644
--- a/chrome/common/media_router/discovery/media_sink_internal.h
+++ b/chrome/common/media_router/discovery/media_sink_internal.h
@@ -35,6 +35,8 @@ struct DialSinkExtraData {
 struct CastSinkExtraData {
   net::IPAddress ip_address;
 
+  int port = 0;
+
   // Model name of the sink.
   std::string model_name;
 
@@ -47,6 +49,9 @@ struct CastSinkExtraData {
   // browser reconnects to a device.
   int cast_channel_id = 0;
 
+  // True if Cast channel is opened from DIAL sink.
+  bool discovered_by_dial = false;
+
   CastSinkExtraData();
   CastSinkExtraData(const CastSinkExtraData& other);
   ~CastSinkExtraData();