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

pkg/compiler/lib/src/parser/partial_elements.dart

 // Copyright (c) 2015, 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 dart2js.parser.partial_elements;
 
 import '../common.dart';
 import '../common/resolution.dart' show ParsingContext, Resolution;
 import '../elements/resolution_types.dart' show ResolutionDynamicType;
 import '../elements/elements.dart'
@@ skipping 24 matching lines @@
 import 'package:front_end/src/fasta/scanner.dart' as Tokens show EOF_TOKEN;
 import '../tree/tree.dart';
 import 'package:front_end/src/fasta/parser.dart'
     show ClassMemberParser, Listener, Parser, ParserError;
 import 'member_listener.dart' show MemberListener;
 import 'node_listener.dart' show NodeListener;
 
 class ClassElementParser extends ClassMemberParser {
   ClassElementParser(Listener listener) : super(listener);
 
-  Token parseFormalParameters(Token token, {bool inFunctionType: false}) {
-    return skipFormalParameters(token);
-  }
+  Token parseFormalParameters(Token token) => skipFormalParameters(token);
 }
 
 abstract class PartialElement implements DeclarationSite {
   Token beginToken;
   Token endToken;
 
   bool hasParseError = false;
 
   bool get isMalformed => hasParseError;
 
@@ skipping 394 matching lines @@
       } on ParserError catch (e) {
         partial.hasParseError = true;
         return new ErrorNode(element.position, e.kind, e.arguments);
       }
       Node node = listener.popNode();
       assert(listener.nodes.isEmpty);
       return node;
     });
   });
 }