Centralized event streams

runtime/observatory/tests/observatory_ui/mocks/objects/error.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file
+// BSD-style license that can be found in the LICENSE file.
 
 part of mocks;
 
 class ErrorRefMock implements M.ErrorRef {
   final String id;
   final M.ErrorKind kind;
   final String message;
   const ErrorRefMock({this.id, this.kind, this.message});
 }
 
 class ErrorMock implements M.Error {
   final String id;
   final M.ErrorKind kind;
   final String message;
   final int size;
   const ErrorMock({this.id, this.kind, this.message, this.size});
 }