[Template expressions] expanding $i18n expressions on webui html

chrome/browser/resources/settings/on_startup_page/on_startup_page.html

 <link rel="import" href="chrome://resources/polymer/v1_0/polymer/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-flex-layout.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-radio-button/paper-radio-button.html">
 <link rel="import" href="chrome://md-settings/controls/settings_radio_group.html">
 <link rel="import" href="chrome://md-settings/on_startup_page/startup_urls_page.html">
 <link rel="import" href="chrome://md-settings/settings_page/settings_animated_pages.html">
 <link rel="import" href="chrome://md-settings/settings_page/settings_subheader.html">
 
 <dom-module id="settings-on-startup-page">
   <link rel="import" type="css"
       href="chrome://md-settings/settings_shared.css">
   <link rel="import" type="css" href="on_startup_shared.css">
   <template>
     <div class="settings-card">
       <div class="settings-box block first">
         <settings-radio-group id="onStartupRadioGroup"
             pref="{{prefs.session.restore_on_startup}}">
           <paper-radio-button name="[[prefValues_.OPEN_NEW_TAB]]"
               i18n-content="onStartupOpenNewTab">
           </paper-radio-button>
           <paper-radio-button name="[[prefValues_.CONTINUE]]"
               i18n-content="onStartupContinue">
           </paper-radio-button>
           <paper-radio-button name="[[prefValues_.OPEN_SPECIFIC]]">
-            <span i18n-content="onStartupOpenSpecific"></span>
+            <span>$i18n{onStartupOpenSpecific}</span>

[Dan Beam, 2016/02/12 23:45:14]

could you do this on like, any other webui page instead? ;P

[dschuyler, 2016/02/13 00:23:24]

Done.

           </paper-radio-button>
         </settings-radio-group>
       </div>
       <template is="dom-if"
           if="[[showStartupUrls_(prefs.session.restore_on_startup.value)]]">
         <settings-startup-urls-page prefs="{{prefs}}">
         </settings-startup-urls-page>
       </template>
     </div>
   </template>
   <script src="on_startup_page.js"></script>
 </dom-module>