Add handleMemberName event to allow parsing Dart VM natives.

pkg/front_end/lib/src/fasta/parser/parser.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 fasta.parser.parser;
 
 import '../scanner.dart' show
     ErrorToken;
 
 import '../scanner/recover.dart' show
@@ skipping 1182 matching lines @@
         token = token.next;
         if (optional("*", token)) {
           // Skip.
           token = token.next;
         }
         continue;
       } else if (optional("(", token) || optional("{", token) ||
                  optional("=>", token)) {
         // A method.
         identifiers = identifiers.prepend(token);
-        return identifiers;
+        return listener.handleMemberName(identifiers);
       } else if (optional("=", token) || optional(";", token) ||
                  optional(",", token)) {
         // A field or abstract getter.
         identifiers = identifiers.prepend(token);
-        return identifiers;
+        return listener.handleMemberName(identifiers);
       } else if (isGetter) {
         hasName = true;
       }
       identifiers = identifiers.prepend(token);
       if (isValidTypeReference(token)) {
         // type ...
         if (optional('.', token.next)) {
           // type '.' ...
           if (token.next.next.isIdentifier()) {
             // type '.' identifier
             token = token.next.next;
           }
         }
         if (optional('<', token.next)) {
           if (token.next is BeginGroupToken) {
             BeginGroupToken beginGroup = token.next;
             if (beginGroup.endGroup == null) {
               reportUnrecoverableError(beginGroup, ErrorKind.UnmatchedToken);
             } else {
               token = beginGroup.endGroup;
             }
           }
         }
       }
       token = token.next;
     }
-    return const Link<Token>();
+    return listener.handleMemberName(const Link<Token>());
   }
 
   Token parseFieldInitializerOpt(Token token) {
     if (optional('=', token)) {
       Token assignment = token;
       listener.beginFieldInitializer(token);
       token = parseExpression(token.next);
       listener.endFieldInitializer(assignment);
     } else {
       listener.handleNoFieldInitializer(token);
@@ skipping 232 matching lines @@
           (identical(value, '.')) ||
           (identical(value, '{')) ||
           (identical(value, '=>')) ||
           (identical(value, '<'))) {
         isField = false;
         break;
       } else if (identical(value, ';')) {
         if (getOrSet != null) {
           // If we found a "get" keyword, this must be an abstract
           // getter.
-          isField = (!identical(getOrSet.stringValue, 'get'));
+          isField = !optional("get", getOrSet);
           // TODO(ahe): This feels like a hack.
         } else {
           isField = true;
         }
         break;
       } else if ((identical(value, '=')) || (identical(value, ','))) {
         isField = true;
         break;
       } else {
         token = reportUnrecoverableError(token, ErrorKind.UnexpectedToken);
@@ skipping 1813 matching lines @@
         break;
     }
     if (isRecoverable) {
       listener.handleRecoverableError(token, kind, arguments);
       return null;
     } else {
       return listener.handleUnrecoverableError(token, kind, arguments);
     }
   }
 }