Make net-internals work a bit better on Android.

chrome/browser/resources/net_internals/util.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.
 
 /**
  * Sets the width (in pixels) on a DOM node.
  * @param {!HtmlNode} node The node whose width is being set.
  * @param {number} widthPx The width in pixels.
  */
 function setNodeWidth(node, widthPx) {
@@ skipping 151 matching lines @@
  * @param {Function} ctor The constructor function being checked.
  */
 function assertFirstConstructorCall(ctor) {
   // This is the variable which is set by cr.addSingletonGetter().
   if (ctor.hasCreateFirstInstance_) {
     throw Error('The class ' + ctor.name + ' is a singleton, and should ' +
                 'only be accessed using ' + ctor.name + '.getInstance().');
   }
   ctor.hasCreateFirstInstance_ = true;
 }
+
+function hasTouchScreen() {
+  return 'ontouchstart' in window;
+}