Fix compact_reporter_test to work with the latest stack_trace.

test/runner/compact_reporter_test.dart

 // Copyright (c) 2015, 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.
 
 import 'dart:io';
 
 import 'package:path/path.dart' as p;
 import 'package:unittest/src/util/io.dart';
 import 'package:unittest/unittest.dart';
 
@@ skipping 28 matching lines @@
   test("runs several failing tests and reports when each fails", () {
     _expectReport("""
         test('failure 1', () => throw new TestFailure('oh no'));
         test('failure 2', () => throw new TestFailure('oh no'));
         test('failure 3', () => throw new TestFailure('oh no'));""",
         """
         +0: failure 1
         +0 -1: failure 1
           oh no
           test.dart 6:33  main.<fn>
-          dart:isolate    _RawReceivePortImpl._handleMessage
 
 
         +0 -1: failure 2
         +0 -2: failure 2
           oh no
           test.dart 7:33  main.<fn>
-          dart:isolate    _RawReceivePortImpl._handleMessage
 
 
         +0 -2: failure 3
         +0 -3: failure 3
           oh no
           test.dart 8:33  main.<fn>
-          dart:isolate    _RawReceivePortImpl._handleMessage
 
 
         +0 -3: Some tests failed.""");
   });
 
   test("runs failing tests along with successful tests", () {
     _expectReport("""
         test('failure 1', () => throw new TestFailure('oh no'));
         test('success 1', () {});
         test('failure 2', () => throw new TestFailure('oh no'));
         test('success 2', () {});""",
         """
         +0: failure 1
         +0 -1: failure 1
           oh no
           test.dart 6:33  main.<fn>
-          dart:isolate    _RawReceivePortImpl._handleMessage
 
 
         +0 -1: success 1
         +1 -1: success 1
         +1 -1: failure 2
         +1 -2: failure 2
           oh no
           test.dart 8:33  main.<fn>
-          dart:isolate    _RawReceivePortImpl._handleMessage
 
 
         +1 -2: success 2
         +2 -2: success 2
         +2 -2: Some tests failed.""");
   });
 
   test("gracefully handles multiple test failures in a row", () {
     _expectReport("""
         // This completer ensures that the test isolate isn't killed until all
         // errors have been thrown.
         var completer = new Completer();
         test('failures', () {
           new Future.microtask(() => throw 'first error');
           new Future.microtask(() => throw 'second error');
           new Future.microtask(() => throw 'third error');
           new Future.microtask(completer.complete);
         });
         test('wait', () => completer.future);""",
         """
         +0: failures
         +0 -1: failures
           first error
           test.dart 10:38  main.<fn>.<fn>
-          dart:isolate     _RawReceivePortImpl._handleMessage
           ===== asynchronous gap ===========================
           dart:async       Future.Future.microtask
           test.dart 10:15  main.<fn>
-          dart:isolate     _RawReceivePortImpl._handleMessage
 
 
           second error
           test.dart 11:38  main.<fn>.<fn>
-          dart:isolate     _RawReceivePortImpl._handleMessage
           ===== asynchronous gap ===========================
           dart:async       Future.Future.microtask
           test.dart 11:15  main.<fn>
-          dart:isolate     _RawReceivePortImpl._handleMessage
 
 
           third error
           test.dart 12:38  main.<fn>.<fn>
-          dart:isolate     _RawReceivePortImpl._handleMessage
           ===== asynchronous gap ===========================
           dart:async       Future.Future.microtask
           test.dart 12:15  main.<fn>
-          dart:isolate     _RawReceivePortImpl._handleMessage
 
 
         +0 -1: wait
         +1 -1: wait
         +1 -1: Some tests failed.""");
   });
 }
 
 final _prefixLength = "XX:XX ".length;
 
@@ skipping 22 matching lines @@
     // Un-indent the expected string.
     var indentation = expected.indexOf(new RegExp("[^ ]"));
     expected = expected.split("\n").map((line) {
       if (line.isEmpty) return line;
       return line.substring(indentation);
     }).join("\n");
 
     expect(actual, equals(expected));
   }), completes);
 }