Add support for the new function-type syntax.

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 7b8635ea37df82a656c7e6c05e3d68939fdf1723..6314267d4771bb4e864c21af3a8442c32f56a00f 100644
--- a/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
@@ -1170,7 +1170,7 @@ class BodyBuilder extends ScopeListener<JumpTarget> implements BuilderHelper {
   }
 
   @override
-  void endType(Token beginToken, Token endToken) {
+  void handleType(Token beginToken, Token endToken) {
     // TODO(ahe): The scope is wrong for return types of generic functions.
     debugEvent("Type");
     List<DartType> arguments = pop();