[MD History] Factor out a common HistoryListBehavior.

chrome/browser/resources/md_history/grouped_list.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-collapse/iron-collapse.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://history/constants.html">
 <link rel="import" href="chrome://history/history_item.html">
+<link rel="import" href="chrome://history/history_list_behavior.html">
 <link rel="import" href="chrome://history/shared_style.html">
 
 <dom-module id="history-grouped-list">
   <template>
     <style include="shared-style">
       :host {
         display: block;
         overflow: auto;
         position: relative;
       }
@@ skipping 79 matching lines @@
                 <template is="dom-if" if="[[domain.rendered]]">
                   <template is="dom-repeat" items="[[domain.visits]]"
                       as="item" initial-count="5" index-as="itemIndex">
                     <history-item item="[[item]]"
                         starred="[[item.starred]]"
                         selected="{{item.selected}}"
                         has-time-gap="[[needsTimeGap_(
                             groupIndex, domainIndex, itemIndex)]]"
                         search-term="[[searchedTerm]]"
                         number-of-items="[[historyData.length]]"
+                        path="[[pathForItem_(
+                            groupIndex, domainIndex, itemIndex)]]"
                         embedded>
                     </history-item>
                   </template>
                 </template>
               </iron-collapse>
             </div>
           </template>
         </div>
       </template>
     </div>
     </template>
   <script src="chrome://history/grouped_list.js"></script>
 </dom-module>