[MD settings] button container to list button in site settings

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-icon/iron-icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.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-menu.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-menu/paper-submenu.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-menu-button/paper-menu-button.html">
 <link rel="import" href="/i18n_setup.html">
 <link rel="import" href="/icons.html">
 <link rel="import" href="/route.html">
 <link rel="import" href="/settings_shared_css.html">
 <link rel="import" href="/site_settings/add_site_dialog.html">
 <link rel="import" href="/site_settings/constants.html">
 <link rel="import" href="/site_settings/site_settings_behavior.html">
 <link rel="import" href="/site_settings/site_settings_prefs_browser_proxy.html">
 
 <dom-module id="settings-site-list">
   <template>
     <style include="settings-shared">
       paper-menu-button {
         left: 8px;
         margin: 0;
         padding: 0;
         right: 8px;
       }
 
-      .button-container {
-        -webkit-margin-start: -4px;
-      }
-
-      .no-upper {
-        text-transform: none;
-      }
-
       .selectable {
         -webkit-user-select: text;
       }
     </style>
     <paper-submenu id="category" hidden
         on-paper-submenu-open="onToggle_" on-paper-submenu-close="onToggle_">
       <div class="menu-trigger settings-box" hidden$="[[allSites]]" actionable>
         <div class="flex" id="header">
           [[computeSiteListHeader_(sites, categoryEnabled)]]
         </div>
@@ skipping 46 matching lines @@
                       menu-value$="[[PermissionValues.DEFAULT]]">
                     $i18n{siteSettingsActionReset}
                   </paper-item>
                 </paper-menu>
               </paper-menu-button>
             </template>
           </div>
         </template>
 
         <template is="dom-if" if="[[!allSites]]">
-          <div class="button-container">
-            <paper-button on-tap="onAddSiteTap_"
-                class="primary-button no-upper">
-              $i18n{addSiteLink}
-            </paper-button>
+          <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>