cros: Update SAML flow.

chrome/browser/resources/chromeos/login/screen_fatal_error.js

Index: chrome/browser/resources/chromeos/login/screen_fatal_error.js
diff --git a/chrome/browser/resources/chromeos/login/screen_message_box.js b/chrome/browser/resources/chromeos/login/screen_fatal_error.js
similarity index 51%
rename from chrome/browser/resources/chromeos/login/screen_message_box.js
rename to chrome/browser/resources/chromeos/login/screen_fatal_error.js
index b7bd21b42301deac1e0b0ae6f4c417e83614b850..dc0332f1ebed9194f42df43824cb8b1152db15cc 100644
--- a/chrome/browser/resources/chromeos/login/screen_message_box.js
+++ b/chrome/browser/resources/chromeos/login/screen_fatal_error.js
@@ -6,7 +6,7 @@
  * @fileoverview A simple message box screen implementation.
  */
 
-login.createScreen('MessageBoxScreen', 'message-box', function() { return {
+login.createScreen('FatalErrorScreen', 'fatal-error', function() { return {
     EXTERNAL_API: [
       'show'
     ],
@@ -18,33 +18,19 @@ login.createScreen('MessageBoxScreen', 'message-box', function() { return {
     callback_: null,
 
     /**
-     * Ok button of the message box.
-     * @type {HTMLButtonElement}
-     */
-    okButton_: null,
-
-    /**
      * Saved hidden status of 'progress-dots'.
      * @type {boolean}
      */
     savedProgressDotsHidden_: null,
 
-    /**
-     * Screen controls in bottom strip.
-     * @type {Array.<HTMLButtonElement>} Buttons to be put in the bottom strip.
-     */
-    get buttons() {
-      var buttons = [];
-
-      this.okButton_ = this.ownerDocument.createElement('button');
-      this.okButton_.addEventListener('click', this.onDismiss_.bind(this));
-      buttons.push(this.okButton_);
-
-      return buttons;
+    /** @override */
+    decorate: function() {
+      $('fatal-error-dismiss-button').addEventListener(
+          'click', this.onDismiss_.bind(this));
     },
 
     get defaultControl() {
-      return this.okButton_;
+      return $('fatal-error-dismiss-button');
     },
 
     /**
@@ -57,19 +43,14 @@ login.createScreen('MessageBoxScreen', 'message-box', function() { return {
 
     /**
      * Shows the no password warning screen.
-     * @param {string} title Title string of the message box.
-     * @param {string} message Body text of the message box.
-     * @param {string} okLabel Label text for the okay button.
      * @param {function()} callback The callback to be invoked when the
      *     screen is dismissed.
      */
-    show: function(title, message, okLabel, callback) {
-      $('message-box-title').textContent = title;
-      $('message-box-body').textContent = message;
-      this.okButton_.textContent = okLabel;
+    show: function(callback) {
+      Oobe.getInstance().headerHidden = true;

[Nikita (slow), 2014/02/06 05:08:25]

nit: When does this header will be restored if we return back to the user pods?

https://code.google.com/p/chromium/codesearch#search/&q=Oobe.getInstance%5C(%...

[xiyuan, 2014/02/06 05:46:05]

Right now it is okay because we always go back to Gaia after this error and Gaia
shows header. But you are right, we probably should restore this in onDismiss in
case the callback is changed in the future. I will do that in a follow up CL.

       this.callback_ = callback;
 
-      Oobe.showScreen({id: SCREEN_MESSAGE_BOX});
+      Oobe.showScreen({id: SCREEN_FATAL_ERROR});
 
       this.savedProgressDotsHidden_ = $('progress-dots').hidden;
       $('progress-dots').hidden = true;