Refactorings to reduce dependencies in ChromeVox 2.

chrome/browser/resources/chromeos/chromevox/braille/braille_input_handler.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 Handles braille input keys when the user is typing or editing
  * text in an input field.  This class cooperates with the Braille IME
  * that is built into Chrome OS to do the actual text editing.
  */
 
@@ skipping 115 matching lines @@
 };
 
 
 /**
  * Called when the content on the braille display is updated.  Modifies the
  * input state according to the new content.
  * @param {cvox.Spannable} text Text, optionally with value and selection
  *     spans.
  */
 cvox.BrailleInputHandler.prototype.onDisplayContentChanged = function(text) {
-  var valueSpan = text.getSpanInstanceOf(cvox.BrailleUtil.ValueSpan);
-  var selectionSpan = text.getSpanInstanceOf(
-      cvox.BrailleUtil.ValueSelectionSpan);
+  var valueSpan = text.getSpanInstanceOf(cvox.ValueSpan);
+  var selectionSpan = text.getSpanInstanceOf(cvox.ValueSelectionSpan);
   if (!(valueSpan && selectionSpan)) {
     return;
   }
   // The type casts are ok because the spans are known to exist.
   var valueStart = /** @type {number} */ (text.getSpanStart(valueSpan));
   var valueEnd = /** @type {number} */ (text.getSpanEnd(valueSpan));
   var selectionStart =
       /** @type {number} */ (text.getSpanStart(selectionSpan));
   var selectionEnd = /** @type {number} */ (text.getSpanEnd(selectionSpan));
   if (selectionStart < valueStart || selectionEnd > valueEnd) {
@@ skipping 351 matching lines @@
     first, second) {
   var limit = Math.min(first.length, second.length);
   var i;
   for (i = 0; i < limit; ++i) {
     if (first.charAt(i) != second.charAt(i)) {
       break;
     }
   }
   return i;
 };