[MD settings] Use hand cursor for selecting site settings sites.

chrome/browser/resources/settings/site_settings/site_data.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/html/web_ui_listener_behavior.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/iron-flex-layout-classes.html">
 <link rel="import" href="/settings_shared_css.html">
 <link rel="import" href="/site_settings/site_data_details_dialog.html">
 <link rel="import" href="/site_settings/site_settings_behavior.html">
 
 <dom-module id="site-data">
   <template>
     <style include="settings-shared">
       :host {
         display: block;
         margin-top: 18px;
         width: 100%;
       }
 
       .list-frame {
         -webkit-padding-start: 36px;
         margin-top: 10px;
       }
 
       .site {
         margin-top: 3px;
       }
     </style>
     <div>$i18n{siteSettingsCookieHeader}</div>
     <div class="list-frame vertical-list">
       <template is="dom-repeat" items="[[sites]]">
-        <div class="list-item underscore">
+        <div class="list-item" on-tap="onSiteTap_" actionable>
           <div class="favicon-image" style$="[[computeSiteIcon(item.site)]]"
               on-tap="onOriginTap_"></div>
-          <div class="middle layout horizontal" on-tap="onSiteTap_">
+          <div class="middle layout horizontal">
             <div class="site flex">[[item.site]]</div>
             <div class="secondary">[[item.localData]]</div>
           </div>
         </div>
       </template>
     </div>
 
   </template>
   <script src="cookie_info.js"></script>
   <script src="cookie_tree_node.js"></script>
   <script src="site_data.js"></script>
 </dom-module>