[MD settings] flag to enable site settings All sites and Site details pages

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

 <link rel="import" href="chrome://resources/cr_elements/icons.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-dropdown/iron-dropdown.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-menu/paper-submenu.html">
 <link rel="import" href="/i18n_setup.html">
 <link rel="import" href="/icons.html">
 <link rel="import" href="/route.html">
@@ skipping 21 matching lines @@
         <div class="flex" id="header">
           [[computeSiteListHeader_(sites, categoryEnabled)]]
         </div>
         <iron-icon id="icon" icon="cr:expand-more"></iron-icon>
       </div>
 
       <div class="list-frame menu-content vertical-list" id="listContainer">
         <template is="dom-repeat" items="[[sites]]">
           <div class="list-item">
             <div class="start layout horizontal center" on-tap="onOriginTap_"
-                actionable>
+                actionable$="[[enableSiteSettings_]]">
               <div class="favicon-image"
                   style$="[[computeSiteIcon(item.originForDisplay)]]">
               </div>
               <div class="middle">
                 <div class="selectable">[[item.originForDisplay]]</div>
                 <div class="selectable secondary">
                   [[computeSiteDescription_(item)]]
                 </div>
               </div>
             </div>
@@ skipping 36 matching lines @@
         <template is="dom-if" if="[[!allSites]]">
           <div class="list-item list-button" on-tap="onAddSiteTap_">
             $i18n{addSiteLink}
           </div>
         </template>
       </div>
     </paper-submenu>
   </template>
   <script src="site_list.js"></script>
 </dom-module>