MD History: Delete Grouped History

chrome/browser/resources/md_history/router.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.
 
 Polymer({
   is: 'history-router',
 
   properties: {
     selectedPage: {
       type: String,
       notify: true,
       observer: 'selectedPageChanged_'
     },
 
     /** @type {QueryState} */
     queryState: Object,
 
-    grouped: Boolean,
-
     path_: String,
 
     queryParams_: Object,
   },
 
   /** @private {boolean} */
   parsing_: false,
 
   observers: [
     'onUrlChanged_(path_, queryParams_)',
   ],
 
   /** @override */
   attached: function() {
     // Redirect legacy search URLs to URLs compatible with material history.
     if (window.location.hash) {
       window.location.href = window.location.href.split('#')[0] + '?' +
           window.location.hash.substr(1);
     }
   },
 
   /**
    * Write all relevant page state to the URL.
    */
   serializeUrl: function() {
     var path = this.selectedPage;
 
-    if (path == 'history' && this.queryState.range != HistoryRange.ALL_TIME)
-      path += '/' + this.rangeToString_(this.queryState.range);
-
     if (path == 'history')
       path = '';
 
-    var offsetParam = null;
-    if (this.selectedPage == 'history' && this.queryState.groupedOffset)
-      offsetParam = this.queryState.groupedOffset;
-
     // Make all modifications at the end of the method so observers can't change
     // the outcome.
     this.path_ = '/' + path;
-    this.set('queryParams_.offset', offsetParam);
     this.set('queryParams_.q', this.queryState.searchTerm || null);
   },
 
   /** @private */
   selectedPageChanged_: function() {
     // Update the URL if the page was changed externally, but ignore the update
     // if it came from parseUrl_().
     if (!this.parsing_)
       this.serializeUrl();
   },
 
   /** @private */
   parseUrl_: function() {
     this.parsing_ = true;
     var changes = {};
     var sections = this.path_.substr(1).split('/');
     var page = sections[0] || 'history';
 
-    if (page == 'history' && this.grouped) {
-      var range = sections.length > 1 ? this.stringToRange_(sections[1]) :
-                                        HistoryRange.ALL_TIME;
-      changes.range = range;
-      changes.offset = Number(this.queryParams_.offset) || 0;
-    }
-
     changes.search = this.queryParams_.q || '';
 
     // Must change selectedPage before `change-query`, otherwise the
     // query-manager will call serializeUrl() with the old page.
     this.selectedPage = page;
     this.fire('change-query', changes);
     this.serializeUrl();
 
     this.parsing_ = false;
   },
 
   /** @private */
   onUrlChanged_: function() {
     // Changing the url and query parameters at the same time will cause two
     // calls to onUrlChanged_. Debounce the actual work so that these two
     // changes get processed together.
     this.debounce('parseUrl', this.parseUrl_.bind(this));
   },
-
-  /**
-   * @param {!HistoryRange} range
-   * @return {string}
-   */
-  rangeToString_: function(range) {
-    switch (range) {
-      case HistoryRange.WEEK:
-        return 'week';
-      case HistoryRange.MONTH:
-        return 'month';
-      default:
-        return '';
-    }
-  },
-
-  /**
-   * @param {string} str
-   * @return {HistoryRange}
-   */
-  stringToRange_: function(str) {
-    switch (str) {
-      case 'week':
-        return HistoryRange.WEEK;
-      case 'month':
-        return HistoryRange.MONTH;
-      default:
-        return HistoryRange.ALL_TIME;
-    }
-  }
 });