Implement generalized function types.

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

Index: pkg/front_end/lib/src/fasta/source/diet_parser.dart
diff --git a/pkg/front_end/lib/src/fasta/source/diet_parser.dart b/pkg/front_end/lib/src/fasta/source/diet_parser.dart
index db223372a0412b9c7b1f7714dd42d751eb94e8ba..253f76b49dd3e162baaa23667a297de30e1bd3c7 100644
--- a/pkg/front_end/lib/src/fasta/source/diet_parser.dart
+++ b/pkg/front_end/lib/src/fasta/source/diet_parser.dart
@@ -10,7 +10,7 @@ import '../parser/class_member_parser.dart' show ClassMemberParser;
 
 import '../parser/listener.dart' show Listener;
 
-import '../parser/parser.dart' show optional;
+import '../parser/parser.dart' show MemberKind, optional;
 
 import '../scanner/token.dart' show BeginGroupToken, Token;
 
@@ -18,11 +18,11 @@ import '../scanner/token.dart' show BeginGroupToken, Token;
 class DietParser extends ClassMemberParser {
   DietParser(Listener listener) : super(listener);
 
-  Token parseFormalParameters(Token token, {bool inFunctionType: false}) {
-    return skipFormals(token);
+  Token parseFormalParameters(Token token, MemberKind kind) {
+    return skipFormals(token, kind);
   }
 
-  Token skipFormals(Token token) {
+  Token skipFormals(Token token, MemberKind kind) {
     listener.beginOptionalFormalParameters(token);
     if (!optional('(', token)) {
       if (optional(';', token)) {
@@ -33,7 +33,7 @@ class DietParser extends ClassMemberParser {
     }
     BeginGroupToken beginGroupToken = token;
     Token endToken = beginGroupToken.endGroup;
-    listener.endFormalParameters(0, token, endToken);
+    listener.endFormalParameters(0, token, endToken, kind);
     return endToken.next;
   }
 }