Enhance precision of recorded instantiation info in ResolutionWorldBuilder

pkg/compiler/lib/src/js_backend/enqueuer.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.
 
 library dart2js.js.enqueue;
 
 import 'dart:collection' show Queue;
 
 import '../common/backend_api.dart' show Backend;
 import '../common/codegen.dart' show CodegenWorkItem;
 import '../common/names.dart' show Identifiers;
 import '../common/tasks.dart' show CompilerTask;
 import '../common/work.dart' show WorkItem;
 import '../common.dart';
 import '../compiler.dart' show Compiler;
 import '../dart_types.dart' show DartType, InterfaceType;
 import '../elements/elements.dart'
     show
         ClassElement,
-        ConstructorElement,
         Element,
         Elements,
         Entity,
         FunctionElement,
         LibraryElement,
         Member,
         MemberElement,
         MethodElement,
         Name,
         TypedElement,
@@ skipping 340 matching lines @@
         // Also [CLOSURE] contains [LocalFunctionElement] which we cannot
         // enqueue.
         addElement = false;
         break;
       case StaticUseKind.SUPER_FIELD_SET:
       case StaticUseKind.SUPER_TEAR_OFF:
       case StaticUseKind.GENERAL:
         break;
       case StaticUseKind.CONSTRUCTOR_INVOKE:
       case StaticUseKind.CONST_CONSTRUCTOR_INVOKE:
+      case StaticUseKind.REDIRECTION:
         registerTypeUse(new TypeUse.instantiation(staticUse.type));
         break;
       case StaticUseKind.DIRECT_INVOKE:
         _registerInstanceMethod(staticUse.element);
         break;
     }
     if (addElement) {
       addToWorkList(element);
     }
   }
@@ skipping 154 matching lines @@
   @override
   void visitStaticUse(StaticUse staticUse) {
     enqueuer.registerStaticUse(staticUse);
   }
 
   @override
   void visitTypeUse(TypeUse typeUse) {
     enqueuer.registerTypeUse(typeUse);
   }
 }