Update latest ChromeVox from upstream

chrome/third_party/chromevox/extensions/searchvox/abstract_result.js

-// Copyright 2012 Google Inc. All Rights Reserved.
-
-/**
- * @fileoverview Defines a result type interface.
- * @author peterxiao@google.com (Peter Xiao)
- */
-
-goog.provide('cvox.AbstractResult');
-
-goog.require('cvox.SearchUtil');
-
-/**
- * @constructor
- */
-cvox.AbstractResult = function() { };
-
-/**
- * Checks the result if it is an unknown result.
- * @param {Element} result Result to be checked.
- * @return {boolean} Whether or not the element is an unknown result.
- */
-cvox.AbstractResult.prototype.isType = function(result) {
-  return false;
-};
-
-/**
- * Speak a generic search result.
- * @param {Element} result Generic result to be spoken.
- * @return {boolean} Whether or not the result was spoken.
- */
-cvox.AbstractResult.prototype.speak = function(result) {
-  return false;
-};
-
-/**
- * Extracts the wikipedia URL from knowledge panel.
- * @param {Element} result Result to extract from.
- * @return {?string} URL.
- */
-cvox.AbstractResult.prototype.getURL = cvox.SearchUtil.extractURL;
-
-/**
- * Returns the node to sync to.
- * @param {Element} result Result.
- * @return {?Node} Node to sync to.
- */
-cvox.AbstractResult.prototype.getSyncNode = function(result) {
-  return result;
-};