Remove tracking of factories with type arguments.

sdk/lib/_internal/compiler/implementation/resolution/members.dart

Index: sdk/lib/_internal/compiler/implementation/resolution/members.dart
diff --git a/sdk/lib/_internal/compiler/implementation/resolution/members.dart b/sdk/lib/_internal/compiler/implementation/resolution/members.dart
index a3968894e7a9770e2357a4040527eb84e771c8ad..f4258e1eaa5738e5f01312a6821ca533a2605e7a 100644
--- a/sdk/lib/_internal/compiler/implementation/resolution/members.dart
+++ b/sdk/lib/_internal/compiler/implementation/resolution/members.dart
@@ -3048,9 +3048,7 @@ class ResolverVisitor extends MappingVisitor<Element> {
                            MessageKind.TYPE_VARIABLE_IN_CONSTANT);
     }
     world.registerInstantiatedType(type, mapping);
-    if (constructor.isFactoryConstructor() && !type.typeArguments.isEmpty) {
-      world.registerFactoryWithTypeArguments(mapping);
-    }
+    compiler.backend.registerRequiredType(type, enclosingElement);
     if (constructor.isGenerativeConstructor() && cls.isAbstract) {
       warning(node, MessageKind.ABSTRACT_CLASS_INSTANTIATION);
       compiler.backend.registerAbstractClassInstantiation(mapping);