chrome://flags Fix missing restart bottom sheet when clicking the

Reset button.

Bug: 928683
Change-Id: I24796a215fee084c173578eff12645d24f785304
Reviewed-on: https://chromium-review.googlesource.com/c/1454553Reviewed-by: Tommy Li <tommycli@chromium.org>
Commit-Queue: Edward Jung <edwardjung@chromium.org>
Cr-Commit-Position: refs/heads/master@{#629182}

components/flags_ui/resources/flags.js

@@ -39,6 +39,9 @@ function renderTemplate(experimentalFeaturesData) {
         $('tab-content-unavailable'));
   }
 
+  // Update the restart container.
+  jstProcess(new JsEvalContext(experimentalFeaturesData), $('needs-restart'));
+
   // Add handlers to dynamically created HTML elements.
   var elements = document.getElementsByClassName('experiment-select');
   for (var i = 0; i < elements.length; ++i) {