Shows and hides the Voice section with the hotword checkbox.

This prevents an empty Voice section from being shown.

BUG=395509

Review URL: https://codereview.chromium.org/418693003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285487 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/options/browser_options.html

@@ -153,7 +153,7 @@
       </div>
   </section>
   <section>
-    <h3 i18n-content="sectionTitleVoice"></h3>
+    <h3 id="voice-section-title" i18n-content="sectionTitleVoice" hidden></h3>
     <div id="voice-section-content">
       <div id="hotword-search" hidden>
         <div class="checkbox">

chrome/browser/resources/options/browser_options.js

@@ -1030,6 +1030,7 @@ cr.define('options', function() {
      * @private
      */
     showHotwordSection_: function(opt_enabled, opt_error) {
+      $('voice-section-title').hidden = false;
       $('hotword-search').hidden = false;
       $('hotword-search-setting-indicator').setError(opt_error);
       if (opt_enabled && opt_error)