Allow delegate calls even though the target is not reflectable.

tests/lib/mirrors/invoke_call_through_implicit_getter_previously_accessed_test.dart

Index: tests/lib/mirrors/invoke_call_through_implicit_getter_previously_accessed_test.dart
diff --git a/tests/lib/mirrors/invoke_call_through_implicit_getter_previously_accessed_test.dart b/tests/lib/mirrors/invoke_call_through_implicit_getter_previously_accessed_test.dart
index a65c82d4264d5a88cf5c53b370bd3631f42d1914..e30b0c33abfbeeeb70b0915607535d9431876351 100644
--- a/tests/lib/mirrors/invoke_call_through_implicit_getter_previously_accessed_test.dart
+++ b/tests/lib/mirrors/invoke_call_through_implicit_getter_previously_accessed_test.dart
@@ -61,10 +61,10 @@ testInstanceReflective() {
                 im.invoke(#closureNamed, [14, 15], {#w: 16}).reflectee);    /// named: continued
   Expect.equals('DNU',
                 im.invoke(#doesNotExist, [17, 18]).reflectee);
-  Expect.throws(() => im.invoke(#closure, ['wrong arity']),  /// getter_call_stub: ok
-                (e) => e is NoSuchMethodError);              /// getter_call_stub: continued
-  Expect.throws(() => im.invoke(#notAClosure, []),           /// getter_call_stub: continued
-                (e) => e is NoSuchMethodError);              /// getter_call_stub: continued
+  Expect.throws(() => im.invoke(#closure, ['wrong arity']),
+                (e) => e is NoSuchMethodError);
+  Expect.throws(() => im.invoke(#notAClosure, []),
+                (e) => e is NoSuchMethodError);
 }
 
 class D {