Introduce .isMalformed

pkg/compiler/lib/src/resolution/member_impl.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.
 
 part of dart2js.resolution.compute_members;
 
 class DeclaredMember implements Member {
   final Name name;
   final Element element;
   final InterfaceType declarer;
@@ skipping 209 matching lines @@
                   this.type,
                   this.functionType)
       : super(inheritedMembers);
 
   bool get isSetter => member.isSetter;
 
   bool get isGetter => member.isGetter;
 
   bool get isMethod => member.isMethod;
 
-  bool get isErroneous => false;
+  bool get isMalformed => false;
 
   String toString() => '${type.getStringAsDeclared('$name')} synthesized '
                        'from ${inheritedMembers}';
 }
 
 class ErroneousMember extends AbstractSyntheticMember {
   ErroneousMember(Setlet<Member> inheritedMembers) : super(inheritedMembers);
 
   DartType get type => functionType;
 
   FunctionType get functionType {
     throw new UnsupportedError('Erroneous members have no type.');
   }
 
   bool get isSetter => false;
 
   bool get isGetter => false;
 
   bool get isMethod => false;
 
-  bool get isErroneous => true;
+  bool get isMalformed => true;
 
   String toString() => "erroneous member '$name' synthesized "
                        "from ${inheritedMembers}";
 }