Sync: Support multiple setup UIs.

components/sync_driver/fake_sync_service.h

 // Copyright 2015 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 COMPONENTS_SYNC_DRIVER_FAKE_SYNC_SERVICE_H_
 #define COMPONENTS_SYNC_DRIVER_FAKE_SYNC_SERVICE_H_
 
 #include <string>
 
 #include "components/sync_driver/sync_service.h"
@@ skipping 27 matching lines @@
   void OnDataTypeRequestsSyncStartup(syncer::ModelType type) override;
   bool CanSyncStart() const override;
   void RequestStop(
       sync_driver::SyncService::SyncStopDataFate data_fate) override;
   void RequestStart() override;
   syncer::ModelTypeSet GetPreferredDataTypes() const override;
   void OnUserChoseDatatypes(bool sync_everything,
                             syncer::ModelTypeSet chosen_types) override;
   void SetFirstSetupComplete() override;
   bool IsFirstSetupInProgress() const override;
-  void SetSetupInProgress(bool setup_in_progress) override;
+  std::unique_ptr<SyncSetupInProgressHandle> GetSetupInProgressHandle()
+      override;
   bool IsSetupInProgress() const override;
   bool ConfigurationDone() const override;
   const GoogleServiceAuthError& GetAuthError() const override;
   bool HasUnrecoverableError() const override;
   bool IsBackendInitialized() const override;
   OpenTabsUIDelegate* GetOpenTabsUIDelegate() override;
   bool IsPassphraseRequiredForDecryption() const override;
   base::Time GetExplicitPassphraseTime() const override;
   bool IsUsingSecondaryPassphrase() const override;
   void EnableEncryptEverything() override;
@@ skipping 36 matching lines @@
 
   GoogleServiceAuthError error_;
   GURL sync_service_url_;
   std::string unrecoverable_error_message_;
   std::unique_ptr<syncer::UserShare> user_share_;
 };
 
 }  // namespace sync_driver
 
 #endif  // COMPONENTS_SYNC_DRIVER_FAKE_SYNC_SERVICE_H_