Even better stack chains with VM async/await.

lib/src/frame.dart

Index: lib/src/frame.dart
diff --git a/lib/src/frame.dart b/lib/src/frame.dart
index 8ecd19fb1a37e7d3b8a967c77c09b91a16e853aa..c06fd6034f45f898e745129904593356dd4ea6a3 100644
--- a/lib/src/frame.dart
+++ b/lib/src/frame.dart
@@ -57,6 +57,10 @@ final _firefoxSafariFrame = new RegExp(
 final _friendlyFrame = new RegExp(
     r'^(\S+)(?: (\d+)(?::(\d+))?)?\s+([^\d]\S*)$');
 
+/// A regular expression that matches asynchronous member names generated by the
+/// VM.
+final _asyncBody = new RegExp(r'<(<anonymous closure>|[^>]+)_async_body>');
+
 final _initialDot = new RegExp(r"^\.");
 
 /// A single stack frame. Each frame points to a precise location in Dart code.
@@ -137,7 +141,7 @@ class Frame {
     // Get the pieces out of the regexp match. Function, URI and line should
     // always be found. The column is optional.
     var member = match[1]
-        .replaceAll("<<anonymous closure>_async_body>", "<async>")
+        .replaceAll(_asyncBody, "<async>")
         .replaceAll("<anonymous closure>", "<fn>");
     var uri = Uri.parse(match[2]);