[Sync] Put everything in sync/api into csync namespace

chrome/browser/sync/glue/data_type_error_handler_mock.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_DATA_TYPE_ERROR_HANDLER_MOCK_H__
 #define CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_ERROR_HANDLER_MOCK_H__
 #pragma once
 
 #include "chrome/browser/sync/glue/data_type_controller.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 #include "sync/internal_api/public/syncable/model_type.h"
 
 namespace browser_sync {
 
 class DataTypeErrorHandlerMock : public DataTypeErrorHandler {
  public:
   DataTypeErrorHandlerMock();
   virtual ~DataTypeErrorHandlerMock();
   MOCK_METHOD2(OnSingleDatatypeUnrecoverableError,
                void(const tracked_objects::Location&, const std::string&));
   MOCK_METHOD3(CreateAndUploadError,
-                   SyncError(const tracked_objects::Location&,
+                   csync::SyncError(const tracked_objects::Location&,
                              const std::string&,
                              syncable::ModelType));
 
 };
 
 }  // namesspace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_ERROR_HANDLER_MOCK_H__