It is time.

ui/accessibility/extensions/longdesc/lastRightClick.js

-/* Copyright (c) 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. */
-
-var borderColor;
-var borderStyle;
-var borderWidth;
-
-chrome.storage.onChanged.addListener(function(changes, namespace) {
-  if (changes.addBorder.newValue) {
-    addBorders();
-  } else {
-    removeBorders();
-  }
-});
-
-chrome.storage.sync.get("addBorder", function(item) {
-  if (item.addBorder) {
-    addBorders();
-  }
-});
-
-document.addEventListener('contextmenu', function(element) {
-  updateContextMenuItem(element);
-}, false);
-
-document.addEventListener('mouseover', function(element) {
-  updateContextMenuItem(element);
-}, false);
-
-document.addEventListener('focus', function(element) {
-  updateContextMenuItem(element);
-});
-
-/**
- * Sends a message to the backgrond script notifying it to
- * enable or disable the context menu item.
- *
- * @param element
- */
-function updateContextMenuItem(element) {
-  var longDesc = '';
-  var ariaDescribedAt = '';
-
-  if (element.target.hasAttribute("longdesc")) {
-    longDesc = element.target.getAttribute("longdesc");
-  }
-
-  if (element.target.hasAttribute("aria-describedat")) {
-    ariaDescribedAt = element.target.getAttribute("aria-describedat");
-  }
-
-  if (longDesc !== '' || ariaDescribedAt !== '') {
-    chrome.runtime.sendMessage({
-      ariaDescribedAt: ariaDescribedAt,
-      longDesc: longDesc,
-      enabled: true
-    });
-  } else {
-    chrome.runtime.sendMessage({
-      enabled: false
-    });
-  }
-}
-
-/**
- * Modify border to make the HTML element more visible.
- */
-function addBorders() {
-  var elementArray = new Array(document.querySelectorAll('[longdesc]'));
-  elementArray.concat(new Array(document.querySelectorAll('[aria-describedat]')));
-
-  for (var i = 0; i < elementArray.length; i++) {
-    borderColor = elementArray[0][i].style.borderColor;
-    borderStyle = elementArray[0][i].style.borderStyle;
-    borderWidth = elementArray[0][i].style.borderWidth;
-
-    elementArray[0][i].style.borderColor = 'blue';
-    elementArray[0][i].style.borderStyle = 'groove';
-    elementArray[0][i].style.borderWidth = '15px';
-  }
-}
-
-/**
- * Revert back to the original border styling.
- */
-function removeBorders() {
-  var elementArray = new Array(document.querySelectorAll('[longdesc]'));
-  elementArray.concat(new Array(document.querySelectorAll('[aria-describedat]')));
-
-  for (var i = 0; i < elementArray.length; i++) {
-    elementArray[0][i].style.borderColor = borderColor;
-    elementArray[0][i].style.borderStyle = borderStyle;
-    elementArray[0][i].style.borderWidth = borderWidth;
-  }
-}