cros: Port SAML support to webview sign-in.

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 93 matching lines @@
     decorate: function() {
       this.isWebviewSignin = loadTimeData.getValue('isWebviewSignin');
       if (this.isWebviewSignin) {
         // Replace iframe with webview.
         var webview = this.ownerDocument.createElement('webview');
         webview.id = 'signin-frame';
         webview.name = 'signin-frame';
         webview.hidden = true;
         $('signin-frame').parentNode.replaceChild(webview, $('signin-frame'));
         this.gaiaAuthHost_ = new cr.login.GaiaAuthHost(webview);
+        cr.login.SamlHandler.setSamlInjectedJs(
+            loadTimeData.getString('samlInjectedJS'));
       } else {
         this.gaiaAuthHost_ = new cr.login.GaiaAuthHost($('signin-frame'));
       }
       this.gaiaAuthHost_.addEventListener(
           'ready', this.onAuthReady_.bind(this));
       this.gaiaAuthHost_.confirmPasswordCallback =
           this.onAuthConfirmPassword_.bind(this);
       this.gaiaAuthHost_.noPasswordCallback =
           this.onAuthNoPassword_.bind(this);
       this.gaiaAuthHost_.insecureContentBlockedCallback =
@@ skipping 587 matching lines @@
      * For more info see C++ class 'WebUILoginView' which calls this method.
      * @param {number} error Error code.
      * @param {string} url The URL that failed to load.
      */
     onFrameError: function(error, url) {
       this.error_ = error;
       chrome.send('frameLoadingCompleted', [this.error_]);
     },
   };
 });