[Sync] Add support for immediately enabling wallet datatype

chrome/browser/sync/profile_sync_components_factory_impl.cc

 // Copyright (c) 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.
 
 #include "base/command_line.h"
 #include "build/build_config.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/bookmarks/enhanced_bookmarks_features.h"
 #include "chrome/browser/dom_distiller/dom_distiller_service_factory.h"
 #include "chrome/browser/history/history_service_factory.h"
@@ skipping 211 matching lines @@
         new AutofillDataTypeController(this, profile_));
   }
 
   // Autofill profile sync is enabled by default.  Register unless explicitly
   // disabled.
   if (!disabled_types.Has(syncer::AUTOFILL_PROFILE)) {
     pss->RegisterDataTypeController(
         new AutofillProfileDataTypeController(this, profile_));
   }
 
-  if (profile_->GetPrefs()->GetBoolean(
-           autofill::prefs::kAutofillWalletSyncExperimentEnabled) &&
-      !disabled_types.Has(syncer::AUTOFILL_WALLET_DATA)) {
-    // The feature can be enabled by sync experiment *or* command line flag,
-    // and additionally the sync type must be enabled.
+  // Autofill wallet sync is enabled by default, but behind a syncer experiment
+  // enforced by the datatype controller. Register unless explicitly disabled.
+  if (!disabled_types.Has(syncer::AUTOFILL_WALLET_DATA)) {
     pss->RegisterDataTypeController(
         new browser_sync::AutofillWalletDataTypeController(this, profile_));
   }
 
   // Bookmark sync is enabled by default.  Register unless explicitly
   // disabled.
   if (!disabled_types.Has(syncer::BOOKMARKS)) {
     pss->RegisterDataTypeController(
         new BookmarkDataTypeController(this, profile_, pss));
   }
@@ skipping 481 matching lines @@
       new TypedUrlModelAssociator(profile_sync_service,
                                   history_backend,
                                   error_handler);
   TypedUrlChangeProcessor* change_processor =
       new TypedUrlChangeProcessor(profile_,
                                   model_associator,
                                   history_backend,
                                   error_handler);
   return SyncComponents(model_associator, change_processor);
 }