Use entities in CommonElements interface.

pkg/compiler/lib/src/js_emitter/lazy_emitter/emitter.dart

 // Copyright (c) 2014, 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_emitter.lazy_emitter;
 
 import 'package:js_runtime/shared/embedded_names.dart' show JsBuiltin;
 
 import '../../common.dart';
 import '../../compiler.dart' show Compiler;
 import '../../constants/values.dart' show ConstantValue;
 import '../../deferred_load.dart' show OutputUnit;
 import '../../elements/elements.dart'
-    show ClassElement, Element, FieldElement, MethodElement;
+    show ClassElement, Element, Entity, FieldElement, MethodElement;
 import '../../js/js.dart' as js;
 import '../../js_backend/js_backend.dart' show JavaScriptBackend, Namer;
 import '../../world.dart' show ClosedWorld;
 import '../js_emitter.dart' show CodeEmitterTask, NativeEmitter;
 import '../js_emitter.dart' as emitterTask show Emitter, EmitterFactory;
 import '../model.dart';
 import '../program_builder/program_builder.dart' show ProgramBuilder;
 import 'model_emitter.dart';
 
 class EmitterFactory implements emitterTask.EmitterFactory {
@@ skipping 100 matching lines @@
   }
 
   @override
   js.Expression interceptorClassAccess(ClassElement element) {
     // Some interceptors are eagerly constructed. However, native interceptors
     // aren't.
     return js.js('#.ensureResolved()', _globalPropertyAccess(element));
   }
 
   @override
-  js.Expression typeAccess(Element element) {
+  js.Expression typeAccess(Entity element) {
     // TODO(floitsch): minify 'ensureResolved'.
     // TODO(floitsch): don't emit `ensureResolved` for eager classes.
     return js.js('#.ensureResolved()', _globalPropertyAccess(element));
   }
 
   @override
   js.Template templateForBuiltin(JsBuiltin builtin) {
     String typeNameProperty = ModelEmitter.typeNameProperty;
 
     switch (builtin) {
@@ skipping 42 matching lines @@
     }
   }
 
   @override
   // TODO(het): Generate this correctly
   int generatedSize(OutputUnit unit) => 0;
 
   @override
   void invalidateCaches() {}
 }