[Sync] Move ModelType and related classes to 'syncer' namespace

sync/api/fake_syncable_service.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 SYNC_API_FAKE_SYNCABLE_SERVICE_H_
 #define SYNC_API_FAKE_SYNCABLE_SERVICE_H_
 #pragma once
 
 #include "sync/api/syncable_service.h"
 
@@ skipping 11 matching lines @@
   // Setters for SyncableService implementation results.
   void set_merge_data_and_start_syncing_error(const SyncError& error);
   void set_process_sync_changes_error(const SyncError& error);
 
   // Whether we're syncing or not. Set on a successful MergeDataAndStartSyncing,
   // unset on StopSyncing. False by default.
   bool syncing() const;
 
   // SyncableService implementation.
   virtual SyncError MergeDataAndStartSyncing(
-      syncable::ModelType type,
+      syncer::ModelType type,
       const SyncDataList& initial_sync_data,
       scoped_ptr<SyncChangeProcessor> sync_processor,
       scoped_ptr<SyncErrorFactory> sync_error_factory) OVERRIDE;
-  virtual void StopSyncing(syncable::ModelType type) OVERRIDE;
-  virtual SyncDataList GetAllSyncData(syncable::ModelType type) const OVERRIDE;
+  virtual void StopSyncing(syncer::ModelType type) OVERRIDE;
+  virtual SyncDataList GetAllSyncData(syncer::ModelType type) const OVERRIDE;
   virtual SyncError ProcessSyncChanges(
       const tracked_objects::Location& from_here,
       const SyncChangeList& change_list) OVERRIDE;
 
  private:
   scoped_ptr<SyncChangeProcessor> sync_processor_;
   SyncError merge_data_and_start_syncing_error_;
   SyncError process_sync_changes_error_;
   bool syncing_;
-  syncable::ModelType type_;
+  syncer::ModelType type_;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_API_FAKE_SYNCABLE_SERVICE_H_