Unified icon-buttons used in the new GAIA flow.

chrome/browser/resources/chromeos/login/screen_gaia_signin.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.
 
 /**
  * @fileoverview Oobe signin screen implementation.
  */
 
 login.createScreen('GaiaSigninScreen', 'gaia-signin', function() {
   // Gaia loading time after which error message must be displayed and
@@ skipping 161 matching lines @@
       this.gaiaAuthHost_.addEventListener('authCompleted',
           this.onAuthCompletedMessage_.bind(this));
       this.gaiaAuthHost_.addEventListener('loadAbort',
         this.onLoadAbortMessage_.bind(this));
 
       $('enterprise-info-hint-link').addEventListener('click', function(e) {
         chrome.send('launchHelpApp', [HELP_TOPIC_ENTERPRISE_REPORTING]);
         e.preventDefault();
       });
 
-      $('back-button-item').addEventListener('mousedown', function(e) {
-        e.preventDefault();
-      });
-
       $('back-button-item').addEventListener('click', function(e) {
         $('back-button-item').hidden = true;
         $('signin-frame').back();
         e.preventDefault();
       });
 
-      $('close-button-item').addEventListener('mousedown', function(e) {
-        e.preventDefault();
-      });
-
       $('close-button-item').addEventListener('click', function(e) {
         this.cancel();
         e.preventDefault();
       }.bind(this));
 
       $('gaia-whitelist-error').addEventListener('buttonclick', function() {
          this.showWhitelistCheckFailedError(false);
       }.bind(this));
 
       $('gaia-whitelist-error').addEventListener('linkclick', function() {
@@ skipping 761 matching lines @@
      */
     updateDeviceId: function(data) {
       if (!this.isNewGaiaFlow)
         return;
 
       if (data && data.deviceId)
         this.gaiaAuthHost_.updateDeviceId(data.deviceId);
     },
   };
 });