Improve handling of parser stack overflows.

pkg/compiler/lib/src/parser/element_listener.dart

Index: pkg/compiler/lib/src/parser/element_listener.dart
diff --git a/pkg/compiler/lib/src/parser/element_listener.dart b/pkg/compiler/lib/src/parser/element_listener.dart
index f7109264fa334857cd60fe7ded35b8e6667a7232..35cca095b21509c1ec6b8a7834969877383100be 100644
--- a/pkg/compiler/lib/src/parser/element_listener.dart
+++ b/pkg/compiler/lib/src/parser/element_listener.dart
@@ -681,6 +681,11 @@ class ElementListener extends Listener {
         errorCode = MessageKind.UNTERMINATED_TOKEN;
         break;
 
+      case ErrorKind.StackOverflow:
+        errorCode = MessageKind.GENERIC;
+        arguments = {"text": "Stack overflow."};
+        break;
+
       case ErrorKind.Unspecified:
         errorCode = MessageKind.GENERIC;
         break;