Start of adding enums for error codes

mojo/services/view_manager/view_manager_service_impl.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 MOJO_SERVICES_VIEW_MANAGER_VIEW_MANAGER_SERVICE_IMPL_H_
 #define MOJO_SERVICES_VIEW_MANAGER_VIEW_MANAGER_SERVICE_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 151 matching lines @@
                                      const Node** old_parent,
                                      std::vector<const Node*>* to_send);
 
   // Converts an array of Nodes to NodeDatas. This assumes all the nodes are
   // valid for the client. The parent of nodes the client is not allowed to see
   // are set to NULL (in the returned NodeDatas).
   Array<NodeDataPtr> NodesToNodeDatas(const std::vector<const Node*>& nodes);
 
   // Overridden from ViewManagerService:
   virtual void CreateNode(Id transport_node_id,
-                          const Callback<void(bool)>& callback) OVERRIDE;
+                          const Callback<void(ErrorCode)>& callback) OVERRIDE;
   virtual void DeleteNode(Id transport_node_id,
                           Id server_change_id,
                           const Callback<void(bool)>& callback) OVERRIDE;
   virtual void AddNode(Id parent_id,
                        Id child_id,
                        Id server_change_id,
                        const Callback<void(bool)>& callback) OVERRIDE;
   virtual void RemoveNodeFromParent(
       Id node_id,
       Id server_change_id,
@@ skipping 73 matching lines @@
 
 #if defined(OS_WIN)
 #pragma warning(pop)
 #endif
 
 }  // namespace service
 }  // namespace view_manager
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_VIEW_MANAGER_VIEW_MANAGER_SERVICE_IMPL_H_