[MD settings] layout of site settings sub-pages

chrome/browser/resources/settings/on_startup_page/startup_url_entry.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/icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-dropdown/iron-dropdown.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-item/paper-item.html">
 <link rel="import" href="chrome://md-settings/on_startup_page/startup_urls_page_browser_proxy.html">
 <link rel="import" href="chrome://md-settings/settings_shared_css.html">
 
 <dom-module id="settings-startup-url-entry">
   <template>
     <style include="settings-shared">
-      .favicon-image {
-        background-size: contain;
-        background-repeat: no-repeat;
-        height: 16px;
-        width: 16px;
-      }
-
       .dropdown-content {
         background: white;
         box-shadow: 0 2px 6px grey;
       }
 
       paper-item:hover {
         background-color: var(--settings-hover-color);
       }
     </style>
     <div class="list-item underbar">
@@ skipping 14 matching lines @@
             <paper-item id="remove" on-tap="onRemoveTap_">
               $i18n{onStartupRemove}
             </paper-item>
           </div>
         </iron-dropdown>
       </template>
     </div>
   </template>
   <script src="startup_url_entry.js"></script>
 </dom-module>