<div class="step right hidden animated" id="update">
  <div class="step-contents">
    <div id="update-cancel-hint" hidden>
      <p i18n-content="cancelUpdateHint"></p>
    </div>
    <div id="update-screen-curtain">
      <div id="checking-updates-label" i18n-content="checkingForUpdatesMsg">
      </div>
      <div id="update-checking-progress">
        <p i18n-content="checkingForUpdates"></p>
        <p id="update-checking-ellipsis"></p>
      </div>
    </div>
    <div id="update-screen-main" hidden>
      <p id="update-upper-label"></p>
      <p id="update-bottom-label" i18n-content="installingUpdateDesc"></p>
      <progress id="update-progress-bar" max="100" value="0"></progress>
      <p id="estimated-time-left" class="progress-message" hidden></p>
      <p id="progress-message" class="progress-message" hidden></p>
    </div>
  </div>
</div>

<div class="step right hidden animated" id="update">
  <div class="step-contents">
    <div id="update-cancel-hint" hidden>
      <p i18n-content="cancelUpdateHint"></p>
    </div>
    <div id="update-screen-curtain">
      <div id="checking-updates-label" i18n-content="checkingForUpdatesMsg">
      </div>
      <div id="update-checking-progress" aria-live="polite">
        <p i18n-content="checkingForUpdates"></p>
        <p id="update-checking-ellipsis"></p>
      </div>
    </div>
    <div id="update-screen-main" hidden>
      <p id="update-upper-label"></p>
      <p id="update-bottom-label" i18n-content="installingUpdateDesc"></p>
      <progress id="update-progress-bar" max="100" value="0"></progress>
      <p id="estimated-time-left" class="progress-message" hidden></p>
      <p id="progress-message" class="progress-message" hidden></p>
    </div>
  </div>
</div>

Make Chrome OS OOBE update check screen announce accessible progress.
Make Chrome OS OOBE update check screen announce accessible progress.

When this screen appears it now speaks "Checking for updates".
If it takes a while, you hear 'period' as the ellipses appear and
disappear, so at least you know it's doing something; we should
improve this later, but this is a good first step.

BUG=127062


Review URL: https://chromiumcodereview.appspot.com/11270017

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@164048 0039d316-1c4b-4281-b951-d872f2087c98
