Revert "Fix code-size regression"

pkg/compiler/lib/src/native/enqueue.dart

Index: pkg/compiler/lib/src/native/enqueue.dart
diff --git a/pkg/compiler/lib/src/native/enqueue.dart b/pkg/compiler/lib/src/native/enqueue.dart
index 65a2daaaca15f0dc6a83bcd9a6e8c731bc17063e..e15f185cbee361d1669c4b225f0fdabedc79d9f5 100644
--- a/pkg/compiler/lib/src/native/enqueue.dart
+++ b/pkg/compiler/lib/src/native/enqueue.dart
@@ -520,21 +520,12 @@ abstract class NativeEnqueuerBase implements NativeEnqueuer {
             .isSubtype(type, backend.listImplementation.rawType)) {
           backend.registerInstantiatedType(type, world, registry);
         }
-        // TODO(johnniwinther): Improve spec string precision to handle type
-        // arguments and implements relations that preserve generics. Currently
-        // we cannot distinguish between `List`, `List<dynamic>`, and
-        // `List<int>` and take all to mean `List<E>`; in effect not including
-        // any native subclasses of generic classes.
-        // TODO(johnniwinther,sra): Find and replace uses of `List` with the
-        // actual implementation classes such as `JSArray` et al.
-        enqueueUnusedClassesMatching((ClassElement nativeClass) {
-          InterfaceType nativeType = nativeClass.thisType;
-          InterfaceType specType = type.element.thisType;
-          return compiler.types.isSubtype(nativeType, specType);
-        }, cause, 'subtypeof($type)');
-        return;
       }
-      assert(type is VoidType || type is DynamicType);
+      assert(type is DartType);
+      enqueueUnusedClassesMatching(
+          (nativeClass) => compiler.types.isSubtype(nativeClass.thisType, type),
+          cause,
+          'subtypeof($type)');
     }
 
     // Give an info so that library developers can compile with -v to find why