Deprecate most of gaia_auth extension

chrome/browser/resources/gaia_auth/offline.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 Offline login implementation.
- */
-
-/**
- * Initialize the offline page.
- * @param {Object} params Intialization params passed from parent page.
- */
-function load(params) {
-  // Setup localized strings.
-  $('sign-in-title').textContent = decodeURIComponent(params['stringSignIn']);
-  $('email-label').textContent = decodeURIComponent(params['stringEmail']);
-  $('password-label').textContent =
-      decodeURIComponent(params['stringPassword']);
-  $('submit-button').value = decodeURIComponent(params['stringSignIn']);
-  $('empty-email-alert').textContent =
-      decodeURIComponent(params['stringEmptyEmail']);
-  $('empty-password-alert').textContent =
-      decodeURIComponent(params['stringEmptyPassword']);
-  $('errormsg-alert').textContent = decodeURIComponent(params['stringError']);
-
-  // Setup actions.
-  var form = $('offline-login-form');
-  form.addEventListener('submit', function(e) {
-    // Clear all previous errors.
-    form.email.classList.remove('field-error');
-    form.password.classList.remove('field-error');
-    form.password.classList.remove('form-error');
-
-    if (form.email.value == '') {
-      form.email.classList.add('field-error');
-      form.email.focus();
-    } else if (form.password.value == '') {
-      form.password.classList.add('field-error');
-      form.password.focus();
-    } else {
-      var msg = {
-        'method': 'offlineLogin',
-        'email': form.email.value,
-        'password': form.password.value
-      };
-      window.parent.postMessage(msg, 'chrome://oobe/');
-    }
-    e.preventDefault();
-  });
-
-  var email = params['email'];
-  if (email) {
-    // Email is present, which means that unsuccessful login attempt has been
-    // made. Try to mimic Gaia's behaviour.
-    form.email.value = email;
-    form.password.classList.add('form-error');
-    form.password.focus();
-  } else {
-    form.email.focus();
-  }
-  window.parent.postMessage({'method': 'loginUILoaded'}, 'chrome://oobe/');
-}
-
-/**
- * Handles initialization message from parent page.
- * @param {MessageEvent} e
- */
-function handleInitializeMessage(e) {
-  var ALLOWED_PARENT_ORIGINS = [
-    'chrome://oobe',
-    'chrome://chrome-signin'
-  ];
-
-  if (ALLOWED_PARENT_ORIGINS.indexOf(e.origin) == -1)
-    return;
-
-  window.removeEventListener('message', handleInitializeMessage);
-
-  var params = e.data;
-  params.parentPage = e.origin;
-  load(params);
-}
-
-document.addEventListener('DOMContentLoaded', function() {
-  window.addEventListener('message', handleInitializeMessage);
-  window.parent.postMessage({'method': 'loginUIDOMContentLoaded'}, '*');
-});