Invoking constructors in js cps

tests/compiler/dart2js/js_backend_cps_ir_basic.dart

Index: tests/compiler/dart2js/js_backend_cps_ir_basic.dart
diff --git a/tests/compiler/dart2js/js_backend_cps_ir_basic.dart b/tests/compiler/dart2js/js_backend_cps_ir_basic.dart
index 3f60d79c7987326440e78ef22c145497808a8bc3..8eb401bd3cbb96c76d2a1442edf71e69c64ae7b7 100644
--- a/tests/compiler/dart2js/js_backend_cps_ir_basic.dart
+++ b/tests/compiler/dart2js/js_backend_cps_ir_basic.dart
@@ -74,4 +74,14 @@ main() { return foo(); }
 function() {
   return null;
 }"""),
+const TestEntry("""
+main() {
+  print(new Set());
+  print(new Set.from([1, 2, 3]));
+}""", r"""
+function() {
+  P.print(P.Set_Set());
+  P.print(P.Set_Set$from([1, 2, 3]));
+  return null;
+}"""),
 ];