MD Settings: Remove secondary text from Languages on Mac/Linux

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/neon-animation/neon-animatable.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-checkbox/paper-checkbox.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_action_menu/cr_action_menu.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_expand_button/cr_expand_button.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_lazy_render/cr_lazy_render.html">
@@ skipping 52 matching lines @@
       #uiLanguageItem:focus,
       #offerTranslations:focus {
         background-color: transparent;
       }
     </style>
     <settings-languages languages="{{languages}}" prefs="{{prefs}}"
         language-helper="{{languageHelper}}">
     </settings-languages>
     <settings-animated-pages id="pages" section="languages">
       <neon-animatable route-path="default">
-        <div class="settings-box first two-line">
+        <div class$="settings-box first [[getLanguageListTwoLine_()]]">
           <div class="start">
             <div>$i18n{languagesListTitle}</div>
+<if expr="chromeos or is_win">
             <div class="secondary">
               [[getProspectiveUILanguageName_(
                     languages, prefs.intl.app_locale.value)]]
             </div>
+</if>
           </div>
           <cr-expand-button expanded="{{languagesOpened_}}"
               alt="$i18n{languagesExpandA11yLabel}">
           </cr-expand-button>
         </div>
         <iron-collapse id="languagesCollapse" opened="[[languagesOpened_]]">
           <div class="list-frame vertical-list">
             <span class="list-item"
                 hidden="[[isHelpTextHidden_(languages.enabled.*)]]">
               <span>$i18n{orderLanguagesInstructions}</span>
@@ skipping 178 matching lines @@
 </if>
     </settings-animated-pages>
     <template is="dom-if" if="[[showAddLanguagesDialog_]]" restamp>
       <settings-add-languages-dialog languages="{{languages}}"
           language-helper="[[languageHelper]]">
       </settings-add-languages-dialog>
     </template>
   </template>
   <script src="languages_page.js"></script>
 </dom-module>