[MR] Add description field to MediaSink.

chrome/browser/media/router/media_router_type_converters.cc

Index: chrome/browser/media/router/media_router_type_converters.cc
diff --git a/chrome/browser/media/router/media_router_type_converters.cc b/chrome/browser/media/router/media_router_type_converters.cc
index 627bf9de3347246fd26ee564af6bb5f092a3bc7c..6541dbfb4a824a71952b271c4856676ac8f614d7 100644
--- a/chrome/browser/media/router/media_router_type_converters.cc
+++ b/chrome/browser/media/router/media_router_type_converters.cc
@@ -59,8 +59,12 @@ media_router::interfaces::MediaSink::IconType SinkIconTypeToMojo(
 media_router::MediaSink
 TypeConverter<media_router::MediaSink, MediaSinkPtr>::Convert(
     const MediaSinkPtr& input) {
-  return media_router::MediaSink(input->sink_id, input->name,
-                                 SinkIconTypeFromMojo(input->icon_type));
+  media_router::MediaSink sink(input->sink_id, input->name,
+                               SinkIconTypeFromMojo(input->icon_type));
+  if (!input->description.get().empty())
+    sink.set_description(input->description);
+
+  return sink;
 }
 
 // static