Add butter bar to login screen to show device enrollement info.

chrome/browser/resources/chromeos/login/display_manager.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 Display manager for WebUI OOBE and login.
  */
 
 // TODO(xiyuan): Find a better to share those constants.
 const SCREEN_GAIA_SIGNIN = 'gaia-signin';
@@ skipping 384 matching lines @@
 
   /**
    * Sets text content for a div with |labelId|.
    * @param {string} labelId Id of the label div.
    * @param {string} labelText Text for the label.
    */
   DisplayManager.setLabelText = function(labelId, labelText) {
     $(labelId).textContent = labelText;
   };
 
+  /**
+   * Sets the text content of the enterprise info message.
+   * If the text is empty, the entire notification will be hidden.

[James Hawkins, 2012/02/28 16:45:33]

Does this line still apply? I thought I read that we don't send empty message
anymore.

[Patrick Dubroy, 2012/03/15 14:31:17]

Done.

+   * @param {string} messageText The message text.
+   */
+  DisplayManager.setEnterpriseInfo = function(messageText) {
+    $('enterprise-info-message').textContent = messageText;
+    var container = $('enterprise-info-container');
+    container.style.visibility = messageText == '' ? 'hidden' : 'visible';

[James Hawkins, 2012/02/28 16:45:33]

container.hidden = true | false

[Patrick Dubroy, 2012/03/15 14:31:17]

Done.

+  };
+
   // Export
   return {
     DisplayManager: DisplayManager
   };
 });