Support "[as ...]" in V8 stack traces in pkg/stack_trace.

pkg/stack_trace/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:unittest/unittest.dart';
 
@@ skipping 56 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 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'));
+    });
+
     test('converts "<anonymous>" to "<fn>"', () {
       String parsedMember(String member) =>
           new Frame.parseV8('    at $member (foo:0:0)').member;
 
       expect(parsedMember('Foo.<anonymous>'), equals('Foo.<fn>'));
       expect(parsedMember('<anonymous>.<anonymous>.bar'),
           equals('<fn>.<fn>.bar'));
     });
 
     test('throws a FormatException for malformed frames', () {
@@ skipping 209 matching lines @@
           equals('http://dartlang.org/thing.dart 5:10 in Foo'));
     });
 
     test('converts "<anonymous closure>" to "<fn>"', () {
       expect(new Frame.parseVM('#0 Foo.<anonymous closure> '
               '(dart:core/uri.dart:5:10)').toString(),
           equals('dart:core/uri.dart 5:10 in Foo.<fn>'));
     });
   });
 }