Properly parse native-code V8 frames.

test/frame_test.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 frame_test;
 
 import 'package:path/path.dart' as path;
 import 'package:stack_trace/stack_trace.dart';
 import 'package:test/test.dart';
 
@@ skipping 131 matching lines @@
     test('parses an anonymous stack frame correctly', () {
       var frame = new Frame.parseV8(
           "    at http://pub.dartlang.org/stuff.dart.js:560:28");
       expect(frame.uri,
           equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
       expect(frame.line, equals(560));
       expect(frame.column, equals(28));
       expect(frame.member, equals('<fn>'));
     });
 
+    test('parses a native stack frame correctly', () {
+      var frame = new Frame.parseV8(
+          "    at Object.stringify (native)");
+      expect(frame.uri, Uri.parse('native'));
+      expect(frame.line, isNull);
+      expect(frame.column, isNull);
+      expect(frame.member, equals('Object.stringify'));
+    });
+
     test('parses a stack frame with [as ...] correctly', () {
       // Ignore "[as ...]", since other stack trace formats don't support a
       // similar construct.
       var frame = new Frame.parseV8("    at VW.call\$0 [as call\$4] "
           "(http://pub.dartlang.org/stuff.dart.js:560:28)");
       expect(frame.uri,
           equals(Uri.parse("http://pub.dartlang.org/stuff.dart.js")));
       expect(frame.line, equals(560));
       expect(frame.column, equals(28));
       expect(frame.member, equals('VW.call\$0'));
@@ skipping 384 matching lines @@
           equals('dart:core/uri.dart 5 in Foo'));
     });
 
     test('prints relative paths as relative', () {
       var relative = path.normalize('relative/path/to/foo.dart');
       expect(new Frame.parseFriendly('$relative 5:10  Foo').toString(),
           equals('$relative 5:10 in Foo'));
     });
   });
 }