Specify types in generated closure args.

pkg/analysis_server/test/services/correction/fix_test.dart

Index: pkg/analysis_server/test/services/correction/fix_test.dart
diff --git a/pkg/analysis_server/test/services/correction/fix_test.dart b/pkg/analysis_server/test/services/correction/fix_test.dart
index 53b0d4a27b3441ad6ec587a641a4c74fe014488d..559eed9a72e5640493f024ce0af804a9f93a7485 100644
--- a/pkg/analysis_server/test/services/correction/fix_test.dart
+++ b/pkg/analysis_server/test/services/correction/fix_test.dart
@@ -580,7 +580,7 @@ main() {
 library libA;
 import 'package:meta/meta.dart';
 
-typedef int Callback(a,b,c);
+typedef int Callback(int a, String b,c);

[Brian Wilkerson, 2017/05/04 18:04:58]

It would be good if we always added a space after a comma. Maybe in a future CL?

[pquitslund, 2017/05/04 19:53:58]

And actually we do!  This is the test source.  The generated code is below and
better spaced. :)

 
 class A {
   A({@required Callback callback}) {}
@@ -600,7 +600,7 @@ main() {
 import 'libA.dart';
 
 main() {
-  A a = new A(callback: (a, b, c) {});
+  A a = new A(callback: (int a, String b, c) {});
 }
 ''',
         target: '/test.dart');