Add support for field formal function typed formal parameters.

pkg/front_end/lib/src/fasta/kernel/body_builder.dart

Index: pkg/front_end/lib/src/fasta/kernel/body_builder.dart
diff --git a/pkg/front_end/lib/src/fasta/kernel/body_builder.dart b/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
index d1dbd272df3ff1373865af50343c706448e5f9bf..ae7a6c6d5f1632cbe062000ebd00e61dc455c7a6 100644
--- a/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
@@ -1339,7 +1339,8 @@ class BodyBuilder extends ScopeListener<JumpTarget> implements BuilderHelper {
   }
 
   @override
-  void endFunctionTypedFormalParameter(Token token) {
+  void endFunctionTypedFormalParameter(Token covariantKeyword,
+      Token thisKeyword, FormalParameterType kind) {
     debugEvent("FunctionTypedFormalParameter");
     if (inCatchClause || functionNestingLevel != 0) {
       exitLocalScope();