[ios] Adds JS resources for various features.

ios/chrome/browser/ui/contextual_search/resources/contextualsearch_unittest.js

+// Copyright 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.
+
+/**
+ * @fileoverview Support code for the Contextual Search unittests feature.
+ *
+ */
+
+
+/**
+ * Namespace for this file.  Depends on __gCrWeb['contextualSearch'] having
+ * already been injected.
+ */
+__gCrWeb['contextualSearch_unittest'] = {};
+
+/* Anyonymizing block */
+new function() {
+
+/**
+ * Generate a tap event on an element. Remove the span arround the element.
+ * @param {string} elementID The ID of the element to tap.
+ * @return {object} Empty if element did not trigger CS. Else, the CS context.
+ */
+__gCrWeb['contextualSearch'].tapOnElement = function(elementID) {
+  var element = document.getElementById(elementID);
+  if (element) {
+    var rect = element.getBoundingClientRect();
+    var relativeX = (rect.left + document.body.scrollLeft);
+    var relativeY = (rect.top + document.body.scrollTop);
+    var touch = document.createEvent('TouchEvent');
+    touch.initUIEvent('touchend', true, true);
+    element.dispatchEvent(touch);
+    return __gCrWeb.contextualSearch.handleTapAtPoint(
+        (relativeX + rect.width / 2) / document.documentElement.scrollWidth,
+        (relativeY + rect.height / 2) / document.documentElement.scrollHeight);
+  }
+  return null;
+};
+
+/* Anyonymizing block end */
+}