Use ".."-style imports in scheduled_test.

pkg/scheduled_test/lib/src/descriptor/utils.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.utils;
 
 import 'dart:io';
 
-import 'package:pathos/path.dart' as path;
+import '../../../../../pkg/pathos/lib/path.dart' as path;
 
 /// Returns a single filesystem entry within [parent] whose name matches
 /// [pattern]. If [pattern] is a string, looks for an exact match; otherwise,
 /// looks for an entry that contains [pattern].
 ///
 /// If there are no entries in [parent] matching [pattern], or more than one,
 /// this will throw an exception.
 ///
 /// [type] is used for error reporting. It should be capitalized.
 String entryMatchingPattern(String type, String parent, Pattern pattern) {
@@ skipping 25 matching lines @@
 /// Returns a human-readable description of [pattern].
 String describePattern(Pattern pattern) {
   if (pattern is String) return "'$pattern'";
   if (pattern is! RegExp) return '$pattern';
 
   var flags = new StringBuffer();
   if (!pattern.isCaseSensitive) flags.write('i');
   if (pattern.isMultiLine) flags.write('m');
   return '/${pattern.pattern}/$flags';
 }