Use a specialized new tab page in TOUCH_UI builds

chrome/browser/resources/touch_ntp/tools/externs.js

+// Copyright (c) 2011 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.
+
+// externs.js contains variable declarations for the closure compiler
+// This isn't actually used when running the code.
+
+// JSCompiler doesn't know about this new Element property
+Element.prototype.classList = {};
+/** @param {string} c */
+Element.prototype.classList.remove = function(c) {};
+/** @param {string} c */
+Element.prototype.classList.add = function(c) {};
+/** @param {string} c */
+Element.prototype.classList.contains = function(c) {};
+
+/**
+ *  @constructor
+ *  @extends {Event}
+ */
+var CustomEvent = function() {};
+CustomEvent.prototype.initCustomEvent =
+  function(eventType, bubbles, cancellable, detail) {};
+/** @type {TouchHandler.EventDetail} */
+CustomEvent.prototype.detail;
+
+
+/** @param {string} s
+ *  @return {string}
+ */
+var url = function(s) {};
+
+/**
+ * @param {string} type
+ * @param {EventListener|function(Event):(boolean|undefined)} listener
+ * @param {boolean=} opt_useCapture
+ * @return {undefined}
+ * @suppress {checkTypes}
+ */
+Window.prototype.addEventListener = function(type, listener, opt_useCapture) {};