Split dart:builtin into dart:builtin and dart:io.

frog/leg/tools/mini_parser.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, 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.
 
 #library('parser');
 
+#import('dart:io');
+
 #import('../../../utils/utf8/utf8.dart');
 
 #import('../elements/elements.dart');
 #import('../scanner/scanner_implementation.dart');
 #import('../scanner/scannerlib.dart');
 #import('../tree/tree.dart');
 #import('../util/characters.dart');
 
 #source('../../source.dart');
 #source('../scanner/byte_array_scanner.dart');
@@ skipping 300 matching lines @@
 String _GREEN_COLOR = '\u001b[32m';
 String _RED_COLOR = '\u001b[31m';
 String _MAGENTA_COLOR = '\u001b[35m';
 String _NO_COLOR = '\u001b[0m';
 
 class Mock {
   const Mock();
   bool get useColors() => true;
   internalError(message) { throw message.toString(); }
 }