[Media Router WebUI] Increase max dialog height from 5 to 10 sinks

Bug: 766181
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I697b83366ab4f53c5414d713c521a91f569a69db
Reviewed-on: https://chromium-review.googlesource.com/671478Reviewed-by: Derek Cheng <imcheng@chromium.org>
Commit-Queue: Takumi Fujimoto <takumif@chromium.org>
Cr-Commit-Position: refs/heads/master@{#502938}

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

@@ -2565,9 +2565,9 @@ Polymer({
           firstRunFlowHeight - issueHeight - searchHeight + searchPadding -
           sinkListPadding;
 
-      // Limit the height of the dialog to five items, including search.
+      // Limit the height of the dialog to ten items, including search.
       var sinkItemHeight = 41;
-      var maxSinkItems = hasSearch ? 4 : 5;
+      var maxSinkItems = hasSearch ? 9 : 10;
       this.sinkListMaxHeight_ =
           Math.min(sinkItemHeight * maxSinkItems, this.sinkListMaxHeight_);
       if (sinkList)