MD settings: Added missing bracket in CSS

chrome/browser/resources/settings/languages_page/languages_page.html

 <link rel="import" href="chrome://resources/html/assert.html">
 <link rel="import" href="chrome://resources/html/cr.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-collapse/iron-collapse.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.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-toggle-button/paper-toggle-button.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_expand_button/cr_expand_button.html">
 <link rel="import" href="chrome://resources/cr_elements/icons.html">
@@ skipping 11 matching lines @@
 
 <if expr="chromeos">
 <link rel="import" href="manage_input_methods_page.html">
 </if>
 
 <dom-module id="settings-languages-page">
   <template>
     <style include="settings-shared">
       .list-button {
         @apply(--settings-actionable);
+      }
 
       .dropdown-content {
         background: white;
         box-shadow: 0 2px 6px grey;
       }
 
       paper-item:hover {
         background-color: var(--settings-hover-color);
       }
     </style>
@@ skipping 174 matching lines @@
       <template is="dom-if" name="edit-dictionary">
         <settings-subpage page-title="$i18n{editDictionaryPageTitle}">
           <settings-edit-dictionary-page></settings-edit-dictionary-page>
         </settings-subpage>
       </template>
 </if>
     </settings-animated-pages>
   </template>
   <script src="languages_page.js"></script>
 </dom-module>