Handle type variables.

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 1092 matching lines @@
     if (isTopLevel) {
       listener.endTopLevelFields(fieldCount, start, semicolon);
     } else {
       listener.endFields(fieldCount, start, semicolon);
     }
     return token;
   }
 
   Token parseTopLevelMethod(Token start, Link<Token> modifiers, Token type,
       Token getOrSet, Token name) {
+    listener.beginTopLevelMethod(start, name);
     Token externalModifier;
     // TODO(johnniwinther): Move error reporting to resolution to give more
     // specific error messages.
     for (Token modifier in modifiers) {
       if (externalModifier == null && optional('external', modifier)) {
         externalModifier = modifier;
       } else {
         reportRecoverableError(
             modifier, ErrorKind.ExtraneousModifier, {'modifier': modifier});
       }
@@ skipping 385 matching lines @@
     var modifiers = identifiers.reverse();
     token = isField
         ? parseFields(start, modifiers, type, getOrSet, name, false)
         : parseMethod(start, modifiers, type, getOrSet, name);
     listener.endMember();
     return token;
   }
 
   Token parseMethod(Token start, Link<Token> modifiers, Token type,
       Token getOrSet, Token name) {
+    listener.beginMethod(start, name);
     Token externalModifier;
     Token staticModifier;
     Token constModifier;
     int modifierCount = 0;
     int allowedModifierCount = 1;
     // TODO(johnniwinther): Move error reporting to resolution to give more
     // specific error messages.
     for (Token modifier in modifiers) {
       if (externalModifier == null && optional('external', modifier)) {
         modifierCount++;
@@ skipping 1784 matching lines @@
         break;
     }
     if (isRecoverable) {
       listener.handleRecoverableError(token, kind, arguments);
       return null;
     } else {
       return listener.handleUnrecoverableError(token, kind, arguments);
     }
   }
 }