Display an info banner on the clear browsing data dialog if the browsing data was cleared within th…

chrome/browser/resources/options/clear_browser_data_overlay.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('options', function() {
   var OptionsPage = options.OptionsPage;
 
   /**
    * ClearBrowserDataOverlay class
    * Encapsulated handling of the 'Clear Browser Data' overlay page.
@@ skipping 77 matching lines @@
     $('clear-browser-data-time-period').disabled = state;
     $('cbd-throbber').style.visibility = state ? 'visible' : 'hidden';
     $('clear-browser-data-dismiss').disabled = state;
 
     if (state)
       $('clear-browser-data-commit').disabled = true;
     else
       ClearBrowserDataOverlay.getInstance().updateCommitButtonState_();
   };
 
+  ClearBrowserDataOverlay.setBannerVisibility = function(args) {
+    var visible = args[0];
+    $('info-banner').hidden = !visible;
+  };
+
   ClearBrowserDataOverlay.doneClearing = function() {
     // The delay gives the user some feedback that the clearing
     // actually worked. Otherwise the dialog just vanishes instantly in most
     // cases.
     window.setTimeout(function() {
       ClearBrowserDataOverlay.dismiss();
     }, 200);
   };
 
   ClearBrowserDataOverlay.dismiss = function() {
     OptionsPage.closeOverlay();
     this.setClearingState(false);
   };
 
   // Export
   return {
     ClearBrowserDataOverlay: ClearBrowserDataOverlay
   };
 });