Fix dinosaur offline game for iOS

components/neterror/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 71 matching lines @@
 /**
  * Frames per second.
  * @const
  */
 var FPS = 60;
 
 /** @const */
 var IS_HIDPI = window.devicePixelRatio > 1;
 
 /** @const */
-var IS_IOS = window.navigator.userAgent.indexOf('CriOS') > -1 ||
-    window.navigator.userAgent == 'UIWebViewForStaticFileContent';
+var IS_IOS = window.navigator.platform.substr(0,2) === 'iP';
 
 /** @const */
 var IS_MOBILE = window.navigator.userAgent.indexOf('Mobi') > -1 || IS_IOS;
 
 /** @const */
 var IS_TOUCH_ENABLED = 'ontouchstart' in window;
 
 /**
  * Default game configuration.
  * @enum {number}
@@ skipping 549 matching lines @@
     if (IS_MOBILE && this.activated) {
       e.preventDefault();
     }
 
     if (e.target != this.detailsButton) {
       if (!this.crashed && (Runner.keycodes.JUMP[e.keyCode] ||
            e.type == Runner.events.TOUCHSTART)) {
         if (!this.activated) {
           this.loadSounds();
           this.activated = true;
-          errorPageController.trackEasterEgg();
+          if (window.errorPageController) {
+            errorPageController.trackEasterEgg();
+          }
         }
 
         if (!this.tRex.jumping && !this.tRex.ducking) {
           this.playSound(this.soundFx.BUTTON_PRESS);
           this.tRex.startJump(this.currentSpeed);
         }
       }
 
       if (this.crashed && e.type == Runner.events.TOUCHSTART &&
           e.currentTarget == this.containerEl) {
@@ skipping 289 matching lines @@
   }
   return bytes.buffer;
 }
 
 
 /**
  * Return the current timestamp.
  * @return {number}
  */
 function getTimeStamp() {
-  return IS_IOS ? new Date().getTime() : performance.now();
+  return performance.now();
 }
 
 
 //******************************************************************************
 
 
 /**
  * Game over panel.
  * @param {!HTMLCanvasElement} canvas
  * @param {Object} textImgPos
@@ skipping 1696 matching lines @@
 
   /**
    * Add a new cloud to the horizon.
    */
   addCloud: function() {
     this.clouds.push(new Cloud(this.canvas, this.spritePos.CLOUD,
         this.dimensions.WIDTH));
   }
 };
 })();