Use directlyInstantiatedClasses instead of instantiatedClasses

dart/tests/try/poi/forget_element_test.dart

Index: dart/tests/try/poi/forget_element_test.dart
diff --git a/dart/tests/try/poi/forget_element_test.dart b/dart/tests/try/poi/forget_element_test.dart
index be478554d3c41f3729fe416aea12c1d9d62f3cc5..519a49d091c68d6cb577c392460656e94e3e506c 100644
--- a/dart/tests/try/poi/forget_element_test.dart
+++ b/dart/tests/try/poi/forget_element_test.dart
@@ -229,7 +229,7 @@ class ForgetElementTestCase extends CompilerTestCase {
   }
 
   Iterable codegenClassesIn(LibraryElement library) {
-    return codegenUniverse.instantiatedClasses.where(
+    return codegenUniverse.directlyInstantiatedClasses.where(
         (ClassElement cls) => cls.library == library);
   }
 
@@ -247,7 +247,7 @@ class ForgetElementTestCase extends CompilerTestCase {
   }
 
   Iterable resolutionClassesIn(LibraryElement library) {
-    return resolutionUniverse.instantiatedClasses.where(
+    return resolutionUniverse.directlyInstantiatedClasses.where(
         (ClassElement cls) => cls.library == library);
   }