Disable easter egg on enterprised enrolled devices

chrome/renderer/resources/offline.js

 // Copyright (c) 2014 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.
 (function() {
 'use strict';
 /**
  * T-Rex runner.
  * @param {string} outerContainerId Outer containing element id.
  * @param {object} opt_config
  * @constructor
@@ skipping 43 matching lines @@
   // Sound FX.
   this.audioBuffer = null;
   this.soundFx = {};
 
   // Global web audio context for playing sounds.
   this.audioContext = null;
 
   // Images.
   this.images = {};
   this.imagesLoaded = 0;
-  this.loadImages();
+
+  if (this.isDisabled()) {
+    this.setupDisabledRunner();
+  } else {
+    this.loadImages();
+  }
 }
 window['Runner'] = Runner;
 
 
 /**
  * Default game width.
  * @const
  */
 var DEFAULT_WIDTH = 600;
 
@@ skipping 53 matching lines @@
 
 /**
  * CSS class names.
  * @enum {string}
  */
 Runner.classes = {
   CANVAS: 'runner-canvas',
   CONTAINER: 'runner-container',
   CRASHED: 'crashed',
   ICON: 'icon-offline',
+  SNACKBAR: 'snackbar',
+  SNACKBAR_SHOW: 'snackbar-show',
   TOUCH_CONTROLLER: 'controller'
 };
 
 
 /**
  * Image source urls.
  * @enum {array<object>}
  */
 Runner.imageSources = {
   LDPI: [
@@ skipping 55 matching lines @@
   TOUCHSTART: 'touchstart',
   VISIBILITY: 'visibilitychange',
   BLUR: 'blur',
   FOCUS: 'focus',
   LOAD: 'load'
 };
 
 
 Runner.prototype = {
   /**
+   * Whether the easter egg has been disabled. CrOS enterprise enrolled devices.
+   * @return {boolean}
+   */
+  isDisabled: function() {
+    return loadTimeData && loadTimeData.valueExists('disabledEasterEgg');
+  },
+
+  /**
+   * For disabled instances, set up a snackbar with the disabled message.
+   */
+  setupDisabledRunner: function() {
+    this.containerEl = document.createElement('div');
+    this.containerEl.className = Runner.classes.SNACKBAR;
+    this.containerEl.innerText = loadTimeData.getValue('disabledEasterEgg');
+    this.outerContainerEl.appendChild(this.containerEl);
+
+    // Show notification when the activation key is pressed.
+    document.addEventListener(Runner.events.KEYDOWN, function(e) {
+        if (Runner.keycodes.JUMP[String(e.keyCode)]) {
+          this.containerEl.classList.add(Runner.classes.SNACKBAR_SHOW);
+          document.querySelector('.icon').classList.add('icon-disabled');
+        }
+      }.bind(this));
+  },
+
+  /**
    * Setting individual settings for debugging.
    * @param {string} setting
    * @param {*} value
    */
   updateConfigSetting: function(setting, value) {
     if (setting in this.config && value != undefined) {
       this.config[setting] = value;
 
       switch (setting) {
         case 'GRAVITY':
@@ skipping 2026 matching lines @@
 
   /**
    * Add a new cloud to the horizon.
    */
   addCloud: function() {
     this.clouds.push(new Cloud(this.canvas, this.cloudImg,
         this.dimensions.WIDTH));
   }
 };
 })();