[Sync] SyncEngine refactor part 2: SyncServiceBase.

components/sync/driver/glue/sync_backend_host_impl.h

 // Copyright 2013 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_GLUE_SYNC_BACKEND_HOST_IMPL_H_
 #define COMPONENTS_SYNC_DRIVER_GLUE_SYNC_BACKEND_HOST_IMPL_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 13 matching lines @@
 #include "components/sync/base/weak_handle.h"
 #include "components/sync/engine/configure_reason.h"
 #include "components/sync/engine/cycle/sync_cycle_snapshot.h"
 #include "components/sync/engine/cycle/type_debug_info_observer.h"
 #include "components/sync/engine/model_type_configurer.h"
 #include "components/sync/engine/sync_engine.h"
 #include "components/sync/engine/sync_manager.h"
 #include "components/sync/protocol/encryption.pb.h"
 #include "components/sync/protocol/sync_protocol_error.h"
 
-class GURL;
-
 namespace invalidation {
 class InvalidationService;
 }  // namespace invalidation
 
 namespace syncer {
 
 class ChangeProcessor;
 class SyncBackendHostCore;
 class SyncBackendRegistrar;
 class SyncClient;
-class SyncManagerFactory;
 class SyncPrefs;
-class UnrecoverableErrorHandler;
-struct DoInitializeOptions;
 
 // The only real implementation of the SyncEngine. See that interface's
 // definition for documentation of public methods.
 class SyncBackendHostImpl : public SyncEngine, public InvalidationHandler {
  public:
   typedef SyncStatus Status;
 
   SyncBackendHostImpl(
       const std::string& name,
       SyncClient* sync_client,
       invalidation::InvalidationService* invalidator,
       const base::WeakPtr<SyncPrefs>& sync_prefs,
       const base::FilePath& sync_folder);
   ~SyncBackendHostImpl() override;
 
   // SyncEngine implementation.
-  void Initialize(
-      SyncEngineHost* host,
-      scoped_refptr<base::SingleThreadTaskRunner> sync_task_runner,
-      const WeakHandle<JsEventHandler>& event_handler,
-      const GURL& service_url,
-      const std::string& sync_user_agent,
-      const SyncCredentials& credentials,
-      bool delete_sync_data_folder,
-      bool enable_local_sync_backend,
-      const base::FilePath& local_sync_backend_folder,
-      std::unique_ptr<SyncManagerFactory> sync_manager_factory,
-      const WeakHandle<UnrecoverableErrorHandler>& unrecoverable_error_handler,
-      const base::Closure& report_unrecoverable_error_function,
-      const HttpPostProviderFactoryGetter& http_post_provider_factory_getter,
-      std::unique_ptr<SyncEncryptionHandler::NigoriState> saved_nigori_state)
-      override;
+  void Initialize(InitParams params) override;
   void TriggerRefresh(const ModelTypeSet& types) override;
   void UpdateCredentials(const SyncCredentials& credentials) override;
   void StartSyncingWithServer() override;
   void SetEncryptionPassphrase(const std::string& passphrase,
                                bool is_explicit) override;
   bool SetDecryptionPassphrase(const std::string& passphrase) override
       WARN_UNUSED_RESULT;
   void StopSyncingForShutdown() override;
   void Shutdown(ShutdownReason reason) override;
   void UnregisterInvalidationIds() override;
@@ skipping 32 matching lines @@
   // InvalidationHandler implementation.
   void OnInvalidatorStateChange(InvalidatorState state) override;
   void OnIncomingInvalidation(
       const ObjectIdInvalidationMap& invalidation_map) override;
   std::string GetOwnerName() const override;
 
  protected:
   // The types and functions below are protected so that test
   // subclasses can use them.
 
-  // Allows tests to perform alternate core initialization work.
-  virtual void InitCore(std::unique_ptr<DoInitializeOptions> options);
-
   // Request the syncer to reconfigure with the specfied params.
   // Virtual for testing.
   virtual void RequestConfigureSyncer(
       ConfigureReason reason,
       ModelTypeSet to_download,
       const ModelSafeRoutingInfo& routing_info,
       const base::Callback<void(ModelTypeSet, ModelTypeSet)>& ready_task,
       const base::Closure& retry_callback);
 
   // Called when the syncer has finished performing a configuration.
@@ skipping 146 matching lines @@
   scoped_refptr<SyncBackendHostCore> core_;
 
   // A handle referencing the main interface for non-blocking sync types. This
   // object is owned because in production code it is a proxy object.
   std::unique_ptr<ModelTypeConnector> model_type_connector_;
 
   bool initialized_ = false;
 
   const base::WeakPtr<SyncPrefs> sync_prefs_;
 
-  std::unique_ptr<SyncBackendRegistrar> registrar_;
-
   // The host which we serve (and are owned by). Set in Initialize() and nulled
   // out in StopSyncingForShutdown().
   SyncEngineHost* host_ = nullptr;
 
+  // A pointer to the registrar; owned by |core_|.
+  SyncBackendRegistrar* registrar_ = nullptr;
+
   // We cache the cryptographer's pending keys whenever NotifyPassphraseRequired
   // is called. This way, before the UI calls SetDecryptionPassphrase on the
   // syncer, it can avoid the overhead of an asynchronous decryption call and
   // give the user immediate feedback about the passphrase entered by first
   // trying to decrypt the cached pending keys on the UI thread. Note that
   // SetDecryptionPassphrase can still fail after the cached pending keys are
   // successfully decrypted if the pending keys have changed since the time they
   // were cached.
   sync_pb::EncryptedData cached_pending_keys_;
 
@@ skipping 17 matching lines @@
   base::ThreadChecker thread_checker_;
 
   base::WeakPtrFactory<SyncBackendHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncBackendHostImpl);
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_DRIVER_GLUE_SYNC_BACKEND_HOST_IMPL_H_