sync: add WIFI_CREDENTIALS protobuf, ModelType, and preference

chrome/browser/resources/sync_setup_overlay.js

Index: chrome/browser/resources/sync_setup_overlay.js
diff --git a/chrome/browser/resources/sync_setup_overlay.js b/chrome/browser/resources/sync_setup_overlay.js
index 4e866ca2dd4c1059f58606ca05e9b15db9c05ed7..92c98d05ba5e01f1188047bd8827838e68cac2fe 100644
--- a/chrome/browser/resources/sync_setup_overlay.js
+++ b/chrome/browser/resources/sync_setup_overlay.js
@@ -306,7 +306,7 @@ cr.define('options', function() {
       $('use-default-link').onclick = null;
 
       // These values need to be kept in sync with where they are read in
-      // SyncSetupFlow::GetDataTypeChoiceData().
+      // sync_setup_handler.cc:GetConfiguration().
       var syncAll = $('sync-select-datatypes').selectedIndex ==
                     options.DataTypeSelection.SYNC_EVERYTHING;
       var syncNothing = $('sync-select-datatypes').selectedIndex ==
@@ -323,6 +323,8 @@ cr.define('options', function() {
         'typedUrlsSynced': syncAll || $('typed-urls-checkbox').checked,
         'appsSynced': syncAll || $('apps-checkbox').checked,
         'tabsSynced': syncAll || $('tabs-checkbox').checked,
+        'wifiCredentialsSynced': syncAll ||
+                                 $('wifiCredentials-checkbox').checked,
         'encryptAllData': encryptAllData,
         'usePassphrase': usePassphrase,
         'isGooglePassphrase': googlePassphrase,
@@ -439,6 +441,15 @@ cr.define('options', function() {
       } else {
         $('tabs-item').hidden = true;
       }
+      if (args.wifiCredentialsRegistered) {
+        $('wifi-credentials-checkbox').checked = args.wifiCredentialsSynced;
+        dataTypeBoxes_['wifi-credentials-checkbox'] =
+          args.wifiCredentialsSynced;
+        $('wifi-credentials-checkbox').onclick = this.handleDataTypeClick_;
+        $('wifi-credentials-item').hidden = false;
+      } else {
+        $('wifi-credentials-item').hidden = true;
+      }
 
       this.setDataTypeCheckboxes_(datatypeSelect.selectedIndex);
     },