Use ".."-style imports in scheduled_test.

pkg/scheduled_test/lib/src/descriptor/directory.dart

 // Copyright (c) 2013, 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 descriptor.file;
 
 import 'dart:async';
 import 'dart:io' as io;
 
-import 'package:pathos/path.dart' as path;
+import '../../../../../pkg/pathos/lib/path.dart' as path;
 
 import '../../descriptor.dart' as descriptor;
 import '../../scheduled_test.dart';
 import '../utils.dart';
 import 'utils.dart';
 
 /// A path builder to ensure that [load] uses POSIX paths.
 final path.Builder _path = new path.Builder(style: path.Style.posix);
 
 /// A descriptor describing a directory containing multiple files.
@@ skipping 66 matching lines @@
           .replaceFirst('|   ', '|-- ');
       buffer.writeln(entryString);
     }
 
     var lastEntryString = prefixLines(contents.last.describe(), prefix: '    ')
         .replaceFirst('    ', "'-- ");
     buffer.write(lastEntryString);
     return buffer.toString();
   }
 }