Autoclick on md-settings is synced with autoclick on settings.

chrome/browser/resources/settings/a11y_page/a11y_page.html

Index: chrome/browser/resources/settings/a11y_page/a11y_page.html
diff --git a/chrome/browser/resources/settings/a11y_page/a11y_page.html b/chrome/browser/resources/settings/a11y_page/a11y_page.html
index 7e1e34778ad6dc79b6d13da7a0d225a357f00335..5fce820d42a7a67db4f087bbe76b2bb353bff352 100644
--- a/chrome/browser/resources/settings/a11y_page/a11y_page.html
+++ b/chrome/browser/resources/settings/a11y_page/a11y_page.html
@@ -4,6 +4,7 @@
 <link rel="import" href="/controls/settings_checkbox.html">
 </if>
 <link rel="import" href="/settings_shared_css.html">
+<link rel="import" href="/i18n_setup.html">
 
 <dom-module id="settings-a11y-page">
   <template>
@@ -47,13 +48,10 @@
 
       <div class="list-item settings-checkbox-spacer">
         <div>$i18n{delayBeforeClickLabel}</div>
-        <select value="{{prefs.settings.a11y.autoclick_delay_ms::change}}">
-          <option value="600">$i18n{delayBeforeClickExtremelyShort}</option>
-          <option value="800">$i18n{delayBeforeClickVeryShort}</option>
-          <option value="1000">$i18n{delayBeforeClickShort}</option>
-          <option value="2000">$i18n{delayBeforeClickLong}</option>
-          <option value="4000">$i18n{delayBeforeClickVeryLong}</option>
-        </select>
+        <settings-dropdown-menu
+            pref="{{prefs.settings.a11y.autoclick_delay_ms}}"
+            menu-options="[[autoClickDelayOptions_]]" no-label-float>
+        </settings-dropdown-menu>
       </div>
 
       <settings-checkbox pref="{{prefs.settings.a11y.virtual_keyboard}}"