Properly parse native-code V8 frames.

lib/src/frame.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;
 
 import 'package:path/path.dart' as path;
 
 import 'trace.dart';
 
 // #1      Foo._bar (file:///home/nweiz/code/stuff.dart:42:21)
 // #1      Foo._bar (file:///home/nweiz/code/stuff.dart:42)
 // #1      Foo._bar (file:///home/nweiz/code/stuff.dart)
 final _vmFrame = new RegExp(r'^#\d+\s+(\S.*) \((.+?)((?::\d+){0,2})\)$');
 
+//     at Object.stringify (native)
 //     at VW.call$0 (http://pub.dartlang.org/stuff.dart.js:560:28)
 //     at VW.call$0 (eval as fn
 //         (http://pub.dartlang.org/stuff.dart.js:560:28), efn:3:28)
 //     at http://pub.dartlang.org/stuff.dart.js:560:28
 final _v8Frame = new RegExp(
     r'^\s*at (?:(\S.*?)(?: \[as [^\]]+\])? \((.*)\)|(.*))$');
 
 // http://pub.dartlang.org/stuff.dart.js:560:28
-final _v8UrlLocation = new RegExp(r'^(.*):(\d+):(\d+)$');
+final _v8UrlLocation = new RegExp(r'^(.*):(\d+):(\d+)|native$');
 
 // eval as function (http://pub.dartlang.org/stuff.dart.js:560:28), efn:3:28
 // eval as function (http://pub.dartlang.org/stuff.dart.js:560:28)
 // eval as function (eval as otherFunction
 //     (http://pub.dartlang.org/stuff.dart.js:560:28))
 final _v8EvalLocation = new RegExp(
     r'^eval at (?:\S.*?) \((.*)\)(?:, .*?:\d+:\d+)?$');
 
 // .VW.call$0@http://pub.dartlang.org/stuff.dart.js:560
 // .VW.call$0("arg")@http://pub.dartlang.org/stuff.dart.js:560
@@ skipping 124 matching lines @@
 
     // v8 location strings can be arbitrarily-nested, since it adds a layer of
     // nesting for each eval performed on that line.
     parseLocation(location, member) {
       var evalMatch = _v8EvalLocation.firstMatch(location);
       while (evalMatch != null) {
         location = evalMatch[1];
         evalMatch = _v8EvalLocation.firstMatch(location);
       }
 
+      if (location == 'native') {
+        return new Frame(Uri.parse('native'), null, null, member);
+      }
+
       var urlMatch = _v8UrlLocation.firstMatch(location);
       if (urlMatch == null) {
         throw new FormatException(
             "Couldn't parse V8 stack trace line '$frame'.");
       }
 
       return new Frame(
           _uriOrPathToUri(urlMatch[1]),
           int.parse(urlMatch[2]),
           int.parse(urlMatch[3]),
@@ skipping 107 matching lines @@
     // their stack frames. However, if we do get a relative path, we should
     // handle it gracefully.
     if (uriOrPath.contains('\\')) return path.windows.toUri(uriOrPath);
     return Uri.parse(uriOrPath);
   }
 
   Frame(this.uri, this.line, this.column, this.member);
 
   String toString() => '$location in $member';
 }