Add unit test for lock and unlock virtual keyboard feature

chrome/test/data/chromeos/virtual_keyboard/typing_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.
  */
 
 /**
  * Tester for lonpress typing accents.
  */
 function LongPressTypingTester(layout) {
@@ skipping 394 matching lines @@
     // Test composed swipe and flick. Should not have any output.
     var move = chrome.virtualKeyboardPrivate.moveCursor;
     move.addExpectation(SwipeDirection.RIGHT,
                         Modifier.CONTROL & Modifier.SHIFT);
     $('keyboard').down(mockEvent(0, 0, key));
     $('keyboard').move(mockEvent(0, height, key));
     $('keyboard').move(mockEvent(width, height, key));
     $('keyboard').up(mockEvent(width, height, key));
   };
   onKeyboardReady('testSwipeFlick', runTest, testDoneCallback);
-}
+}