Remove tracking of factories with type arguments.

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

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of resolution;
 
 abstract class TreeElements {
   Element get currentElement;
   Setlet<Node> get superUses;
 
@@ skipping 3030 matching lines @@
     // [constructor] might be the implementation element
     // and only declaration elements may be registered.
     world.registerStaticUse(constructor.declaration);
     ClassElement cls = constructor.getEnclosingClass();
     InterfaceType type = mapping.getType(node);
     if (node.isConst() && type.containsTypeVariables) {
       compiler.reportError(node.send.selector,
                            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);
     }
 
     if (isSymbolConstructor) {
       if (node.isConst()) {
         Node argumentNode = node.send.arguments.head;
         Constant name = compiler.constantHandler.compileNodeWithDefinitions(
             argumentNode, mapping, isConst: true);
@@ skipping 1706 matching lines @@
     return finishConstructorReference(visit(expression),
                                       expression, expression);
   }
 }
 
 /// Looks up [name] in [scope] and unwraps the result.
 Element lookupInScope(Compiler compiler, Node node,
                       Scope scope, String name) {
   return Elements.unwrap(scope.lookup(name), compiler, node);
 }