End to End browser test for the virtual keyboard.

chrome/test/data/chromeos/virtual_keyboard/end_to_end_test.js

+/*
+ * Copyright 2013 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.
+ */
+
+var kb = document.getElementById('keyboard');
+
+/**
+ * Finds the character specified and types it. Assumes that the default
+ * layout is qwerty, and the default keyset is lower.
+ * @param {{string}} char The character to type.
+ */
+var type = function(char) {
+  var keyset = kb.querySelector('#qwerty-lower');
+  var keys = Array.prototype.slice.call(keyset.querySelectorAll('kb-key'));
+  var key = keys.filter(function(key) {
+    return key.charValue == char;
+  })[0];
+  key.down({pointerId: 1});
+  key.up({pointerId: 1});
+}
+
+if (kb.isReady()) {
+  type('a');
+} else {
+  kb.addKeysetChangedObserver(function() {
+    if (kb.isReady())
+      type('a');
+  });
+}