[MD settings] controlled by extension icon on default font size

chrome/browser/resources/settings/controls/settings_dropdown_menu.html

Index: chrome/browser/resources/settings/controls/settings_dropdown_menu.html
diff --git a/chrome/browser/resources/settings/controls/settings_dropdown_menu.html b/chrome/browser/resources/settings/controls/settings_dropdown_menu.html
index 6659294fdfd3016f9a95b5e95a495e99b39a3adb..c834172f57064b9f8f6be35dda2c12bfcc993d3f 100644
--- a/chrome/browser/resources/settings/controls/settings_dropdown_menu.html
+++ b/chrome/browser/resources/settings/controls/settings_dropdown_menu.html
@@ -1,5 +1,7 @@
 <link rel="import" href="chrome://resources/html/md_select_css.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
+<link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_pref_behavior.html">
+<link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_pref_indicator.html">
 <link rel="import" href="pref_control_behavior.html">
 <link rel="import" href="../i18n_setup.html">
 <link rel="import" href="../prefs/pref_util.html">
@@ -9,14 +11,26 @@
 <dom-module id="settings-dropdown-menu">
   <template>
     <style include="settings-shared md-select">
+      :host {
+        display: inline-flex;
+      }
+
+      cr-policy-pref-indicator,
+      select {
+        -webkit-margin-start: var(--checkbox-spacing);
+      }
+
       /* Hide "Custom" value when unselectable. */
       option:disabled {
         display: none;
       }
     </style>
+    <template is="dom-if" if="[[pref.controlledBy]]" restamp>
+      <cr-policy-pref-indicator pref="[[pref]]"></cr-policy-pref-indicator>
+    </template>
     <div class="md-select-wrapper">
       <select class="md-select" id="dropdownMenu" on-change="onChange_"
-          disabled="[[shouldDisableMenu_(disabled, menuOptions)]]">
+          disabled="[[shouldDisableMenu_(disabled, menuOptions, pref.*)]]">
         <template is="dom-repeat" items="[[menuOptions]]">
           <option value="[[item.value]]">[[item.name]]</option>
         </template>