MD History: Add routing for grouped history mode.

chrome/browser/resources/md_history/list_container.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_lazy_render/cr_lazy_render.html">
 <link rel="import" href="chrome://resources/cr_elements/shared_style_css.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-a11y-announcer/iron-a11y-announcer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-pages/iron-pages.html">
 <link rel="import" href="chrome://history/browser_service.html">
 <link rel="import" href="chrome://history/history_list.html">
 <link rel="import" href="chrome://history/shared_style.html">
 
 <!-- Lazy loaded: cr-dialog, cr-action-menu, history-grouped-list, paper-button.
@@ skipping 12 matching lines @@
       #content > * {
         height: 100%;
       }
 
       dialog .body {
         white-space: pre-wrap;
       }
     </style>
     <iron-pages id="content"
         attr-for-selected="id"
-        selected="[[selectedPage_]]"
-        fallback-selection="infinite-list">
+        selected="[[selectedPage_]]">
       <history-list id="infinite-list"
           querying="[[queryState.querying]]"
           searched-term="[[queryResult.info.term]]">
       </history-list>
       <template is="dom-if" if="[[grouped]]">
         <history-grouped-list id="grouped-list"
             range="[[queryState.range]]"
             query-interval="[[queryResult.info.queryInterval]]"
             searched-term="[[queryResult.info.term]]">
         </history-grouped-list>
@@ skipping 24 matching lines @@
         <button id="menuRemoveButton" class="dropdown-item"
             disabled="[[!canDeleteHistory_()]]"
             on-tap="onRemoveFromHistoryTap_">
           $i18n{removeFromHistory}
         </button>
       </dialog>
     </template>
   </template>
   <script src="chrome://history/list_container.js"></script>
 </dom-module>