Refactorings to reduce dependencies in ChromeVox 2.

chrome/browser/resources/chromeos/chromevox/walkers/structural_line_walker.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 A JavaScript class for walking lines.
  */
 
 
 goog.provide('cvox.StructuralLineWalker');
 
 goog.require('cvox.AbstractSelectionWalker');
+goog.require('cvox.BrailleUtil');
 goog.require('cvox.TraverseContent');
 
 /**
  * @constructor
  * @extends {cvox.AbstractSelectionWalker}
  */
 cvox.StructuralLineWalker = function() {
   goog.base(this);
   this.grain = cvox.TraverseContent.kLine;
 };
@@ skipping 45 matching lines @@
   var spannable =
       cvox.BrailleUtil.getTemplated(prevNode, objNode, {name: name});
   spannable.setSpan(objNode, 0, spannable.getLength());
   braille.text = spannable;
 
   // Remove any selections.
   braille.startIndex = 0;
   braille.endIndex = 0;
   return braille;
 };