Treat ambiguous types as malformed.

sdk/lib/_internal/compiler/implementation/elements/elements.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.
 
 library elements;
 
 
 import '../tree/tree.dart';
 import '../util/util.dart';
 import '../resolution/resolution.dart';
@@ skipping 101 matching lines @@
       const ElementKind('statement', ElementCategory.NONE);
   static const ElementKind LABEL =
       const ElementKind('label', ElementCategory.NONE);
   static const ElementKind VOID =
       const ElementKind('void', ElementCategory.NONE);
 
   static const ElementKind AMBIGUOUS =
       const ElementKind('ambiguous', ElementCategory.NONE);
   static const ElementKind ERROR =
       const ElementKind('error', ElementCategory.NONE);
-  static const ElementKind MALFORMED_TYPE =
-      const ElementKind('malformed', ElementCategory.NONE);
 
   toString() => id;
 }
 
 /**
  * A declared element of a program.
  *
  * The declared elements of a program include classes, methods,
  * fields, variables, parameters, etc.
  *
@@ skipping 802 matching lines @@
   int get resolutionState;
   Token get beginToken;
   Token get endToken;
 
   // TODO(kasperl): Try to get rid of these.
   void set annotatedElement(Element value);
   void set resolutionState(int value);
 
   MetadataAnnotation ensureResolved(Compiler compiler);
 }