sync: Add GetAllSyncData to sync/api

chrome/browser/sync/glue/shared_change_processor.h

 // 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.
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_SHARED_CHANGE_PROCESSOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_SHARED_CHANGE_PROCESSOR_H_
 
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/synchronization/lock.h"
 #include "chrome/browser/sync/glue/data_type_error_handler.h"
 #include "sync/api/sync_change_processor.h"
 #include "sync/api/sync_error.h"
 #include "sync/api/sync_error_factory.h"
 #include "sync/api/sync_merge_result.h"
 #include "sync/internal_api/public/engine/model_safe_worker.h"
 
 class ProfileSyncComponentsFactory;
 class ProfileSyncService;
 
 namespace syncer {
 class SyncData;
 class SyncableService;
 
 typedef std::vector<syncer::SyncData> SyncDataList;
-}  // namespace
+}  // namespace syncer
 
 namespace browser_sync {
 
 class GenericChangeProcessor;
 class DataTypeErrorHandler;
 
 // A ref-counted wrapper around a GenericChangeProcessor for use with datatypes
 // that don't live on the UI thread.
 //
 // We need to make it refcounted as the ownership transfer from the
@@ skipping 33 matching lines @@
   // |local_service_| are dropped and return errors. The syncer will be safe to
   // shut down from the point of view of this datatype.
   // Note: Once disconnected, you cannot reconnect without creating a new
   // SharedChangeProcessor.
   // Returns: true if we were previously succesfully connected, false if we were
   // already disconnected.
   virtual bool Disconnect();
 
   // GenericChangeProcessor stubs (with disconnect support).
   // Should only be called on the same thread the datatype resides.
-  virtual syncer::SyncError GetSyncData(
-      syncer::SyncDataList* current_sync_data);
   virtual int GetSyncCount();
   virtual syncer::SyncError ProcessSyncChanges(
       const tracked_objects::Location& from_here,
       const syncer::SyncChangeList& change_list);
+  virtual syncer::SyncDataList GetAllSyncData(syncer::ModelType type) const;
+  virtual syncer::SyncError GetAllSyncDataReturnError(
+      syncer::ModelType type,
+      syncer::SyncDataList* data) const;
   virtual bool SyncModelHasUserCreatedNodes(bool* has_nodes);
   virtual bool CryptoReadyIfNecessary();
 
   // Register |generic_change_processor_| as the change processor for the
   // current type on |model_safe_group|.
   // Does nothing if |disconnected_| is true.
   virtual void ActivateDataType(syncer::ModelSafeGroup model_safe_group);
 
   virtual syncer::SyncError CreateAndUploadError(
       const tracked_objects::Location& location,
@@ skipping 26 matching lines @@
   GenericChangeProcessor* generic_change_processor_;
 
   DataTypeErrorHandler* error_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(SharedChangeProcessor);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_SHARED_CHANGE_PROCESSOR_H_