Move `browsingData` extension API out of experimental.

chrome/common/extensions/docs/examples/api/browsingData/basic/popup.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.
 
 /**
  * This class wraps the popup's form, and performs the proper clearing of data
  * based on the user's selections. It depends on the form containing a single
  * select element with an id of 'timeframe', and a single button with an id of
  * 'button'. When you write actual code you should probably be a little more
  * accepting of variance, but this is just a sample app. :)
@@ skipping 91 matching lines @@
    * state of `timeframe_` in order to pull a timeframe, then calls the clearing
    * method with appropriate arguments.
    *
    * @private
    */
   handleClick_: function () {
     var removal_start = this.parseMilliseconds_(this.timeframe_.value);
     if (removal_start !== undefined) {
       this.button_.setAttribute('disabled', 'disabled');
       this.button_.innerText = 'Clearing...';
-      chrome.experimental.browsingData.remove(removal_start, {
+      chrome.browsingData.remove(removal_start, {
         "appcache": true,
         "cache": true,
         "cookies": true,
         "downloads": true,
         "fileSystems": true,
         "formData": true,
         "history": true,
         "indexedDB": true,
         "localStorage": true,
+        "originBoundCertificates": true,
         "pluginData": true,
         "passwords": true,
         "webSQL": true
       }, this.handleCallback_.bind(this));
     }
   }
 };
 
 document.addEventListener('DOMContentLoaded', function () {
   window.PC = new PopupController();
 });