Merge kernel closure conversion into the Dart SDK

pkg/kernel/test/class_hierarchy_basic.dart

Index: pkg/kernel/test/class_hierarchy_basic.dart
diff --git a/pkg/kernel/test/class_hierarchy_basic.dart b/pkg/kernel/test/class_hierarchy_basic.dart
index 601bf044339c1f842a4b6cc2161f5a7d1c2e3aee..81205051469b85f339b81e1c3f220f109668f79d 100644
--- a/pkg/kernel/test/class_hierarchy_basic.dart
+++ b/pkg/kernel/test/class_hierarchy_basic.dart
@@ -43,6 +43,7 @@ class BasicClassHierarchy {
         callback(member, superMember, setter);
       }
     }
+
     // Report declared members overriding inheritable members.
     for (var member in class_.mixin.members) {
       for (var supertype in class_.supers) {
@@ -172,6 +173,7 @@ class BasicClassHierarchy {
           interfaceGettersAndCalls[node]);
       mergeMaps(interfaceSetters[type.classNode], interfaceSetters[node]);
     }
+
     inheritFrom(node.supertype);
     inheritFrom(node.mixedInType);
     node.implementedTypes.forEach(inheritFrom);