chrome/browser/resources/pdf/elements/viewer-password-screen/viewer-password-screen.html

<polymer-element name="viewer-password-screen" attributes="text active">
<template>
  <link rel="stylesheet" href="viewer-password-screen.css">
  <div class="center">
    <form class="form">
      <div id="message">{{text}}</div>
      <input id="password" type="password" size="20"></input>
      <input id="submit" type="submit" on-click={{submit}}></input>
    </form>
  </div>
</template>
<script src="viewer-password-screen.js"></script>
</polymer-element>