MD History: Add routing for grouped history mode.

chrome/browser/resources/md_history/grouped_list.js

 // Copyright 2016 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.
 
 /**
  * @typedef {{domain: string,
  *            visits: !Array<HistoryEntry>,
  *            rendered: boolean,
  *            expanded: boolean}}
  */
@@ skipping 22 matching lines @@
     groupedHistoryData_: Array,
 
     // An array of history entries in reverse chronological order.
     historyData: Array,
 
     queryInterval: String,
 
     range: Number,
   },
 
-  observers: ['updateGroupedHistoryData_(range, historyData)'],
+  observers: ['updateGroupedHistoryData_(historyData)'],
 
   /**
    * @param {!Array<!HistoryEntry>} results
    * @param {boolean} incremental
    * @param {boolean} finished
    */
   addNewResults: function(results, incremental, finished) {
     this.historyData = results;
   },
 
@@ skipping 130 matching lines @@
 
   /**
    * @param {boolean} expanded
    * @return {string}
    * @private
    */
   getDropdownIcon_: function(expanded) {
     return expanded ? 'cr:expand-less' : 'cr:expand-more';
   },
 });