Revert "Add support for the new function-type syntax."

pkg/front_end/lib/src/fasta/source/diet_listener.dart

 // Copyright (c) 2016, 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.diet_listener;
 
 import 'package:kernel/ast.dart' show
     AsyncMarker;
 
 import 'package:kernel/class_hierarchy.dart' show
@@ skipping 115 matching lines @@
   void handleNoTypeArguments(Token token) {
     debugEvent("NoTypeArguments");
   }
 
   @override
   void handleNoType(Token token) {
     debugEvent("NoType");
   }
 
   @override
-  void handleType(Token beginToken, Token endToken) {
+  void endType(Token beginToken, Token endToken) {
     debugEvent("Type");
     discard(1);
   }
 
   @override
   void endTypeList(int count) {
     debugEvent("TypeList");
   }
 
   @override
@@ skipping 36 matching lines @@
   void handleNoFormalParameters(Token token) {
     debugEvent("NoFormalParameters");
     if (identical(peek(), "-")) {
       pop();
       push("unary-");
     }
     push(token);
   }
 
   @override
-  void endFunctionTypeAlias(
-       Token typedefKeyword, Token equals, Token endToken) {
+  void endFunctionTypeAlias(Token typedefKeyword, Token endToken) {
     debugEvent("FunctionTypeAlias");
     discard(2); // Name + endToken.
     checkEmpty(typedefKeyword.charOffset);
   }
 
   @override
   void endFields(int count, Token beginToken, Token endToken) {
     debugEvent("Fields");
     List<String> names = popList(count);
     Builder builder = lookupBuilder(beginToken, null, names.first);
@@ skipping 356 matching lines @@
   bool get isTargetingDartVm {
     // TODO(ahe): Find a more reliable way to check if this is the Dart VM.
     return coreTypes.getCoreLibrary("dart:_js_helper") == null;
   }
 
   @override
   void debugEvent(String name) {
     // printEvent(name);
   }
 }