--- chrome/browser/resources/settings/appearance_page/appearance_page.html.orig	2021-04-14 18:40:54 UTC
+++ chrome/browser/resources/settings/appearance_page/appearance_page.html
@@ -27,7 +27,7 @@
           <cr-link-row class="first" hidden="[[!pageVisibility.setTheme]]"
               label="$i18n{themes}" sub-label="[[themeSublabel_]]"
               on-click="openThemeUrl_" external></cr-link-row>
-<if expr="not is_linux or chromeos or lacros">
+<if expr="not is_posix or chromeos or lacros">
           <template is="dom-if" if="[[prefs.extensions.theme.id.value]]">
             <div class="separator"></div>
             <cr-button id="useDefault" on-click="onUseDefaultTap_">
@@ -35,7 +35,7 @@
             </cr-button>
           </template>
 </if>
-<if expr="is_linux and not chromeos and not lacros">
+<if expr="is_posix and not chromeos and not lacros">
           <div class="settings-row continuation"
               hidden="[[!showThemesSecondary_(
                   prefs.extensions.theme.id.value, useSystemTheme_)]]"
@@ -109,7 +109,7 @@
             pref="{{prefs.bookmark_bar.show_on_all_tabs}}"
             label="$i18n{showBookmarksBar}">
         </settings-toggle-button>
-<if expr="is_linux and not chromeos and not lacros">
+<if expr="is_posix and not chromeos and not lacros">
         <div class="hr" hidden="[[!pageVisibility.bookmarksBar]]"></div>
         <settings-toggle-button
             pref="{{prefs.browser.custom_chrome_frame}}"
