Make closures in constructor initializers read type variables directly.

tests/language/closure_in_constructor_test.dart

Index: tests/language/closure_in_constructor_test.dart
diff --git a/tests/language/closure_in_constructor_test.dart b/tests/language/closure_in_constructor_test.dart
index 1975cdc58a75c75086b1d25b6718db5c3ab74864..66ee970196cb99a8920866b1b5d2a74c12719526 100644
--- a/tests/language/closure_in_constructor_test.dart
+++ b/tests/language/closure_in_constructor_test.dart
@@ -19,4 +19,8 @@ class A<T> {
 main() {
   Expect.isTrue((new A.factory()).closure() is List);
   Expect.isTrue((new A()).closure() is List);
+  Expect.isTrue((new A<int>.factory()).closure() is List<int>);
+  Expect.isTrue((new A<int>()).closure() is List<int>);
+  Expect.isFalse((new A<int>.factory()).closure() is List<String>);
+  Expect.isFalse((new A<int>()).closure() is List<String>);
 }