MD History: Announce search results for screen-reader users

chrome/browser/resources/md_history/history_item.js

 // Copyright 2015 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.
 
 /**
  * @param {!Element} root
  * @param {?Element} boundary
  * @param {cr.ui.FocusRow.Delegate} delegate
  * @constructor
  * @extends {cr.ui.FocusRow}
@@ skipping 271 matching lines @@
      */
     showIcon_: function() {
       this.$.icon.style.backgroundImage = cr.icon.getFavicon(this.item.url);
     },
 
     selectionNotAllowed_: function() {
       return !loadTimeData.getBoolean('allowDeletingHistory');
     },
 
     /**
-     * Generates the title for this history card.
      * @param {number} numberOfItems The number of items in the card.
+     * @param {string} historyDate Date of the current result.
      * @param {string} search The search term associated with these results.
+     * @return {string} The title for this history card.
      * @private
      */
     cardTitle_: function(numberOfItems, historyDate, search) {
       if (!search)
         return this.item.dateRelativeDay;
-
-      var resultId = numberOfItems == 1 ? 'searchResult' : 'searchResults';
-      return loadTimeData.getStringF('foundSearchResults', numberOfItems,
-          loadTimeData.getString(resultId), search);
+      return HistoryItem.searchResultsTitle(numberOfItems, search);
     },
   });
 
   /**
    * Check whether the time difference between the given history item and the
    * next one is large enough for a spacer to be required.
    * @param {Array<HistoryEntry>} visits
    * @param {number} currentIndex
    * @param {string} searchedTerm
    * @return {boolean} Whether or not time gap separator is required.
-   * @private
    */
   HistoryItem.needsTimeGap = function(visits, currentIndex, searchedTerm) {
     if (currentIndex >= visits.length - 1 || visits.length == 0)
       return false;
 
     var currentItem = visits[currentIndex];
     var nextItem = visits[currentIndex + 1];
 
     if (searchedTerm)
       return currentItem.dateShort != nextItem.dateShort;
 
     return currentItem.time - nextItem.time > BROWSING_GAP_TIME &&
         currentItem.dateRelativeDay == nextItem.dateRelativeDay;
   };
 
+  /**
+   * @param {number} numberOfResults
+   * @param {string} searchTerm
+   * @return {string} The title for a page of search results.
+   */
+  HistoryItem.searchResultsTitle = function(numberOfResults, searchTerm) {
+    var resultId = numberOfResults == 1 ? 'searchResult' : 'searchResults';
+    return loadTimeData.getStringF('foundSearchResults', numberOfResults,
+        loadTimeData.getString(resultId), searchTerm);
+  };
+
   return { HistoryItem: HistoryItem };
 });