[Media Router WebUI] Use updated sink on click

chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js

Index: chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js
diff --git a/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js b/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js
index 0011fc3296b9839d0efc081ce123b5074123c2c1..0cdb780b04ea1530d6243d07b1c7041ce3fef336 100644
--- a/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js
+++ b/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js
@@ -2010,8 +2010,10 @@ Polymer({
           // Remove any sinks that are no longer discovered.
           this.sinksToShow_.splice(i, 1);
         } else {
-          // If the sink exists, remove it from |updatedSinkList| as it is
-          // already in |sinksToShow_|.
+          // If the sink exists, move it from |updatedSinkList| to
+          // |sinksToShow_| in the same position, as the cast modes or other
+          // fields may have been updated.
+          this.sinksToShow_[i] = updatedSinkList[index];
           updatedSinkList.splice(index, 1);
         }
       }