- Print "top-level" instead of "class '::'" in

runtime/lib/errors_patch.dart

 // Copyright (c) 2012, 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.
 
 patch class Error {
   /* patch */ static String _objectToString(Object object) {
     return Object._toString(object);
   }
 }
 
@@ skipping 107 matching lines @@
           actual_buf.write(", ");
         }
         actual_buf.write(key);
         actual_buf.write(": ");
         actual_buf.write(Error.safeToString(value));
         i++;
       });
     }
     var args_mismatch = _existingArgumentNames != null;
     StringBuffer msg_buf = new StringBuffer(_developerMessage(args_mismatch));
+    String receiver_str = Error.safeToString(_receiver);
+    if ("Type: class '::'" == receiver_str) {
+      receiver_str = "top-level";
+    }
     if (!args_mismatch) {
       msg_buf.write(
           "NoSuchMethodError : method not found: '$_memberName'\n"
-          "Receiver: ${Error.safeToString(_receiver)}\n"
+          "Receiver: $receiver_str\n"
           "Arguments: [$actual_buf]");
     } else {
       String actualParameters = actual_buf.toString();
       StringBuffer formal_buf = new StringBuffer();
       for (int i = 0; i < _existingArgumentNames.length; i++) {
         if (i > 0) {
           formal_buf.write(", ");
         }
         formal_buf.write(_existingArgumentNames[i]);
       }
       String formalParameters = formal_buf.toString();
       msg_buf.write(
           "NoSuchMethodError: incorrect number of arguments passed to "
           "method named '$_memberName'\n"
-          "Receiver: ${Error.safeToString(_receiver)}\n"
+          "Receiver: $receiver_str\n"
           "Tried calling: $_memberName($actualParameters)\n"
           "Found: $_memberName($formalParameters)");
     }
     return msg_buf.toString();
   }
 }