Implement generalized function types.

tests/compiler/dart2js/message_kind_test.dart

 // Copyright (c) 2013, 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.
 
 import 'package:expect/expect.dart';
 import 'dart:async';
 import "package:async_helper/async_helper.dart";
 import 'package:compiler/src/diagnostics/messages.dart'
     show MessageKind, MessageTemplate;
 
@@ skipping 16 matching lines @@
         name == 'PLEASE_REPORT_THE_CRASH'
         // We cannot provide examples for patch errors.
         ||
         name.startsWith('PATCH_') ||
         name == 'LIBRARY_NOT_SUPPORTED'
         // TODO(johnniwinther): Remove these when [Compiler.reportUnusedCode] is
         // reenabled.
         ||
         name == 'UNUSED_METHOD' ||
         name == 'UNUSED_CLASS' ||
-        name == 'UNUSED_TYPEDEF') continue;
+        name == 'UNUSED_TYPEDEF' ||
+
+        // Fasta no longer generates EXTRANEOUS_MODIFIER_REPLACE.
+        name == 'EXTRANEOUS_MODIFIER_REPLACE' ||
+
+        // Fasta just reports EXTRANEOUS_MODIFIER.
+        name == 'FORMAL_DECLARED_STATIC' ||
+
+        // Additional warning from dart2js.
+        name == 'VOID_NOT_ALLOWED') continue;
     if (template.examples != null) {
       examples.add(template);
     } else {
       print("No example in '$name'");
     }
   }
   ;
   var cachedCompiler;
   asyncTest(() => Future.forEach(examples, (MessageTemplate template) {
         print("Checking '${template.kind}'.");
         Stopwatch sw = new Stopwatch()..start();
         return check(template, cachedCompiler).then((var compiler) {
           cachedCompiler = compiler;
           sw.stop();
           print("Checked '${template.kind}' in ${sw.elapsedMilliseconds}ms.");
         });
       }));
 }