USS SyncContextProxy / data type activation refactoring

sync/sessions/model_type_registry.h

 // Copyright 2014 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 SYNC_ENGINE_MODEL_TYPE_REGISTRY_H_
 #define SYNC_ENGINE_MODEL_TYPE_REGISTRY_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 45 matching lines @@
 
   // Sets the set of enabled types.
   void SetEnabledDirectoryTypes(const ModelSafeRoutingInfo& routing_info);
 
   // Enables an off-thread type for syncing.  Connects the given proxy
   // and its task_runner to the newly created worker.
   //
   // Expects that the proxy's ModelType is not currently enabled.
   void ConnectSyncTypeToWorker(
       syncer::ModelType type,
-      const syncer_v2::DataTypeState& data_type_state,
-      const syncer_v2::UpdateResponseDataList& saved_pending_updates,
-      const scoped_refptr<base::SequencedTaskRunner>& type_task_runner,
-      const base::WeakPtr<syncer_v2::ModelTypeProcessor>& type_processor)
-      override;
+      scoped_ptr<syncer_v2::ActivationContext> activation_context) override;
 
   // Disables the syncing of an off-thread type.
   //
   // Expects that the type is currently enabled.
   // Deletes the worker associated with the type.
   void DisconnectSyncWorker(syncer::ModelType type) override;
 
   // Implementation of SyncEncryptionHandler::Observer.
   void OnPassphraseRequired(
       PassphraseRequiredReason reason,
@@ skipping 79 matching lines @@
   base::ObserverList<TypeDebugInfoObserver> type_debug_info_observers_;
 
   base::WeakPtrFactory<ModelTypeRegistry> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ModelTypeRegistry);
 };
 
 }  // namespace syncer
 
 #endif // SYNC_ENGINE_MODEL_TYPE_REGISTRY_H_