Enable devices page UI on MacOSX

chrome/browser/resources/options/browser_options.html

 <div id="settings" class="page" hidden>
   <header>
     <h1 i18n-content="settingsTitle"></h1>
   </header>
   <include src="reset_profile_settings_banner.html">
   <include src="automatic_settings_reset_banner.html">
 <if expr="chromeos">
   <include src="secondary_user_banner.html">
   <section>
     <div id="network-section-header" class="section-header">
@@ skipping 632 matching lines @@
           <label>
             <input id="sslCheckRevocation" pref="ssl.rev_checking.enabled"
                    type="checkbox">
             <span i18n-content="sslCheckRevocation"></span>
           </label>
         </div>
       </div>
   </section>
   <section id="cloud-print-connector-section">
     <h3 i18n-content="advancedSectionTitleCloudPrint"></h3>
-<if expr="enable_mdns">
+<if expr="enable_service_discovery">
     <div id="cloudprint-options-mdns" hidden>
       <div class="settings-row">
         <span i18n-content="cloudPrintOptionLabel"></span>
         <a target="_blank" i18n-content="learnMore"
            i18n-values="href:cloudPrintLearnMoreURL"></a>
       </div>
       <button id="cloudPrintDevicesPageButton"
               i18n-content="cloudPrintDevicesPageButton">
       </button>
 
@@ skipping 276 matching lines @@
     </div>
   </section>
   </div>  <!-- advanced-settings-container -->
   </div>  <!-- advanced-settings -->
   <footer>
     <button id="advanced-settings-expander" class="link-button"
         i18n-content="showAdvancedSettings">
     </button>
   </footer>
   </div>