Use Managed properties for Preferred and Provider.

chrome/browser/resources/options/chromeos/internet_detail.html

 <div id="details-internet-page" class="page" hidden>
   <div class="close-button"></div>
   <!-- Network header -->
   <div id="network-details-header">
     <div id="network-details-title"></div>
     <div id="network-details-subtitle">
       <span id="network-details-subtitle-status"></span>
       <span id="network-details-subtitle-separator"> - </span>
       <span id="network-details-subtitle-type"></span>
     </div>
@@ skipping 56 matching lines @@
         <table class="option-control-table">
           <tr id="prefer-network">
             <td>
               <div class="checkbox">
                 <span class="controlled-setting-with-label">
                   <input id="prefer-network-wifi" type="checkbox">
                   <span>
                     <label for="prefer-network-wifi"
                         i18n-content="inetPreferredNetwork">
                     </label>
-                    <span class="controlled-setting-indicator" data="preferred"
-                        for="prefer-network-wifi">
+                    <span class="controlled-setting-indicator"
+                        managed="Priority" for="prefer-network-wifi">
                     </span>
                   </span>
                 </span>
               </div>
             </td>
           </tr>
           <tr class="auto-connect-network">
             <td>
               <div class="checkbox">
                 <span class="controlled-setting-with-label">
@@ skipping 128 matching lines @@
           </tr>
           <tr>
             <td class="option-name" i18n-content="inetServiceName"></td>
             <td id="inet-service-name" class="option-value"></td>
           </tr>
           <tr>
             <td class="option-name" i18n-content="inetServerHostname"></td>
             <td>
               <input class="option-value" id="inet-server-hostname"></input>
               <span class="controlled-setting-indicator"
-                  data="serverHostname" for="inet-server-hostname"></span>
+                  managed="VPN.Host" for="inet-server-hostname"></span>
             </td>
           </tr>
           <tr>
             <td class="option-name" i18n-content="inetProviderType"></td>
             <td id="inet-provider-type" class="option-value"></td>
           </tr>
           <tr>
             <td class="option-name" i18n-content="inetUsername"></td>
             <td id="inet-username" class="option-value"></td>
           </tr>
@@ skipping 446 matching lines @@
       </button>
       <button id="details-internet-configure" i18n-content="configureButton">
       </button>
       <button id="activate-details" i18n-content="activateButton"></button>
       <button id="buyplan-details" i18n-content="buyplanButton"></button>
       <button id="view-account-details" i18n-content="viewAccountButton">
       </button>
     </div>
   </div>
 </div>