Chrome bookmarks delete undo popup - increase timeout from 5s to 10s.

Bug: 856209
Change-Id: Ifcb55f5e3f7e50ff94ebfe1a6e607e06c22d4add
Reviewed-on: https://chromium-review.googlesource.com/1212363Reviewed-by: calamity <calamity@chromium.org>
Commit-Queue: Chris Hall <chrishall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589417}

chrome/browser/resources/md_bookmarks/app.html

@@ -78,7 +78,7 @@
     </div>
     <bookmarks-router></bookmarks-router>
     <bookmarks-command-manager></bookmarks-command-manager>
-    <bookmarks-toast-manager duration="5000"></bookmarks-toast-manager>
+    <bookmarks-toast-manager duration="10000"></bookmarks-toast-manager>
   </template>
   <script src="chrome://bookmarks/app.js"></script>
 </dom-module>