Add support for field formal function typed formal parameters.

pkg/front_end/lib/src/fasta/parser/parser.dart

Index: pkg/front_end/lib/src/fasta/parser/parser.dart
diff --git a/pkg/front_end/lib/src/fasta/parser/parser.dart b/pkg/front_end/lib/src/fasta/parser/parser.dart
index 2a58ae6dbfcc3a8c525a84b269a5f7552ef7dc96..8a59815db2d0f05bba5f3c01e2f27d3377a2d4af 100644
--- a/pkg/front_end/lib/src/fasta/parser/parser.dart
+++ b/pkg/front_end/lib/src/fasta/parser/parser.dart
@@ -538,7 +538,8 @@ class Parser {
       listener.beginFunctionTypedFormalParameter(token);
       listener.handleNoTypeVariables(token);
       token = parseFormalParameters(token);
-      listener.endFunctionTypedFormalParameter(token);
+      listener.endFunctionTypedFormalParameter(
+          covariantKeyword, thisKeyword, kind);
       // Generalized function types don't allow inline function types.
       // The following isn't allowed:
       //    int Function(int bar(String x)).
@@ -551,7 +552,8 @@ class Parser {
       listener.beginFunctionTypedFormalParameter(token);
       token = parseTypeVariablesOpt(token);
       token = parseFormalParameters(token);
-      listener.endFunctionTypedFormalParameter(token);
+      listener.endFunctionTypedFormalParameter(
+          covariantKeyword, thisKeyword, kind);
       // Generalized function types don't allow inline function types.
       // The following isn't allowed:
       //    int Function(int bar(String x)).