[Sync] Componentize synced_tab_delegate

components/sync_driver/sync_client.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_SYNC_CLIENT_H_
 #define COMPONENTS_SYNC_DRIVER_SYNC_CLIENT_H_
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
@@ skipping 24 matching lines @@
 }  // namespace history
 
 namespace password_manager {
 class PasswordStore;
 }  // namespace password_manager
 
 namespace syncer {
 class SyncableService;
 }  // namespace syncer
 
+namespace sync_sessions {
+class SyncSessionsClient;
+}  // namespace sync_sessions
+
 namespace sync_driver {
 
 class SyncApiComponentFactory;
 class SyncService;
 
 // Interface for clients of the Sync API to plumb through necessary dependent
 // components. This interface is purely for abstracting dependencies, and
 // should not contain any non-trivial functional logic.
 //
 // Note: on some platforms, getters might return nullptr. Callers are expected
@@ skipping 22 matching lines @@
 
   // Returns a callback that will be invoked when password sync state has
   // potentially been changed.
   virtual base::Closure GetPasswordStateChangedCallback() = 0;
 
   virtual autofill::PersonalDataManager* GetPersonalDataManager() = 0;
   virtual scoped_refptr<autofill::AutofillWebDataService>
   GetWebDataService() = 0;
   virtual BookmarkUndoService* GetBookmarkUndoServiceIfExists() = 0;
   virtual scoped_refptr<syncer::ExtensionsActivity> GetExtensionsActivity() = 0;
+  virtual sync_sessions::SyncSessionsClient* GetSyncSessionsClient() = 0;
 
   // Returns a weak pointer to the syncable service specified by |type|.
   // Weak pointer may be unset if service is already destroyed.
   // Note: Should only be called from the model type thread.
   virtual base::WeakPtr<syncer::SyncableService> GetSyncableServiceForType(
       syncer::ModelType type) = 0;
 
   // Creates and returns a new ModelSafeWorker for the group, or null if one
   // cannot be created.
   // TODO(maxbogue): Move this inside SyncApiComponentFactory.
   virtual scoped_refptr<syncer::ModelSafeWorker> CreateModelWorkerForGroup(
       syncer::ModelSafeGroup group,
       syncer::WorkerLoopDestructionObserver* observer) = 0;
 
   // Returns the current SyncApiComponentFactory instance.
   virtual SyncApiComponentFactory* GetSyncApiComponentFactory() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SyncClient);
 };
 
 }  // namespace sync_driver
 
 #endif  // COMPONENTS_SYNC_DRIVER_SYNC_CLIENT_H_