[Media Router] Handle multiple Presentation URLs when creating routes

chrome/browser/media/router/route_request_result.cc

Index: chrome/browser/media/router/route_request_result.cc
diff --git a/chrome/browser/media/router/route_request_result.cc b/chrome/browser/media/router/route_request_result.cc
index 62a257e8775297b29dcecd51e69d411892ae6dc4..32e3fd3fa17432fe866b67fa9115dc963ccf4621 100644
--- a/chrome/browser/media/router/route_request_result.cc
+++ b/chrome/browser/media/router/route_request_result.cc
@@ -33,7 +33,9 @@ RouteRequestResult::RouteRequestResult(std::unique_ptr<MediaRoute> route,
     : route_(std::move(route)),
       presentation_id_(presentation_id),
       error_(error),
-      result_code_(result_code) {}
+      result_code_(result_code) {
+  presentation_url_ = route_ ? GURL(route_->media_source().id()) : GURL("");

[mark a. foltz, 2016/12/02 20:59:09]

There is a TODO to have MediaSource contain a GURL if it was created from a URL.
 That would make this cleaner, but not necessary to fix in this patch.

[zhaobin, 2016/12/02 22:50:57]

Done.

+}
 
 RouteRequestResult::~RouteRequestResult() = default;