Aligns the Q A Z keys on the a11y keyboard.

ui/keyboard/resources/constants.js

 // Copyright (c) 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.
 
 /**
  * Aspect ratio of keyboard.
  * @type {number}
  */
 var ASPECT_RATIO = 4.5;
 
 var RowAlignment = {
   STRETCH: "stretch",
   LEFT: "left",
   RIGHT: "right",
-  CENTER: "center"
+  CENTER: "center",
+  STRETCHRIGHT: "stretchright"

[bshe, 2014/01/31 16:09:49]

you may want to add a short description of what is stretchright means.

 }
 
 /**
  * Ratio of key height and font size.
  * @type {number}
  */
 var FONT_SIZE_RATIO = 3;
 
 /**
  * @type {enum}
@@ skipping 38 matching lines @@
 var DEFAULT_KEY_WEIGHT_Y = 100;
 
 /**
  * The top padding on each key.
  * @type {number}
  */
 // TODO(rsadam): Remove this variable once figure out how to calculate this
 // number before the key is rendered.
 var KEY_PADDING_TOP = 1;
 var KEY_PADDING_BOTTOM = 1;