MD History: Deselect items when clicking 'More from this site'

chrome/browser/resources/md_history/history_list.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.
 
 Polymer({
   is: 'history-list',
 
   properties: {
     // The search term for the current query. Set when the query returns.
     searchedTerm: {
@@ skipping 76 matching lines @@
    */
   addNewResults: function(historyResults) {
     var results = historyResults.slice();
     /** @type {IronScrollThresholdElement} */(this.$['scroll-threshold'])
         .clearTriggers();
 
     if (this.lastSearchedTerm_ != this.searchedTerm) {
       this.resultLoadingDisabled_ = false;
       if (this.historyData_)
         this.splice('historyData_', 0, this.historyData_.length);
+      this.fire('unselect-all');
       this.lastSearchedTerm_ = this.searchedTerm;
     }
 
     if (this.historyData_) {
       // If we have previously received data, push the new items onto the
       // existing array.
       results.unshift('historyData_');
       this.push.apply(this, results);
     } else {
       // The first time we receive data, use set() to ensure the iron-list is
@@ skipping 130 matching lines @@
    * @private
    */
   isCardEnd_: function(item, i, length) {
     if (length == 0 || i > length - 1)
       return false;
     return i == length - 1 ||
         this.historyData_[i].dateRelativeDay !=
         this.historyData_[i + 1].dateRelativeDay;
   },
 });