Tests for `void`.

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

Index: pkg/front_end/lib/src/fasta/source/diet_listener.dart
diff --git a/pkg/front_end/lib/src/fasta/source/diet_listener.dart b/pkg/front_end/lib/src/fasta/source/diet_listener.dart
index 366f1c11c9ff01d5c10d77eef9393278a1545615..130b6bf4e12e658e3451d6f4f625a6802252a3e9 100644
--- a/pkg/front_end/lib/src/fasta/source/diet_listener.dart
+++ b/pkg/front_end/lib/src/fasta/source/diet_listener.dart
@@ -132,7 +132,7 @@ class DietListener extends StackListener {
   }
 
   @override
-  void endType(Token beginToken, Token endToken) {
+  void handleType(Token beginToken, Token endToken) {
     debugEvent("Type");
     discard(1);
   }
@@ -189,7 +189,8 @@ class DietListener extends StackListener {
   }
 
   @override
-  void endFunctionTypeAlias(Token typedefKeyword, Token endToken) {
+  void endFunctionTypeAlias(
+       Token typedefKeyword, Token equals, Token endToken) {
     debugEvent("FunctionTypeAlias");
     discard(2); // Name + endToken.
     checkEmpty();