Add sync settings for reading list

ios/chrome/browser/sync/sync_setup_service.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef IOS_CHROME_BROWSER_SYNC_SYNC_SETUP_SERVICE_H_
 #define IOS_CHROME_BROWSER_SYNC_SYNC_SETUP_SERVICE_H_
 
 #include <map>
 #include <memory>
 
@@ skipping 26 matching lines @@
   } SyncServiceState;
 
   // The set of user-selectable datatypes handled by Chrome for iOS.
   typedef enum {
     kSyncBookmarks,
     kSyncOmniboxHistory,
     kSyncPasswords,
     kSyncOpenTabs,
     kSyncAutofill,
     kSyncPreferences,
+    kSyncReadingList,
     kNumberOfSyncableDatatypes
   } SyncableDatatype;
 
   SyncSetupService(syncer::SyncService* sync_service, PrefService* prefs);
   ~SyncSetupService() override;
 
   // Returns the |syncer::ModelType| associated to the given
   // |SyncableDatatypes|.
   syncer::ModelType GetModelType(SyncableDatatype datatype);
 
@@ skipping 51 matching lines @@
   PrefService* const prefs_;
   syncer::ModelTypeSet user_selectable_types_;
 
   // Prevents Sync from running until configuration is complete.
   std::unique_ptr<syncer::SyncSetupInProgressHandle> sync_blocker_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncSetupService);
 };
 
 #endif  // IOS_CHROME_BROWSER_SYNC_SYNC_SETUP_SERVICE_H_