Change Enqueuer to use Entity instead of Element.

pkg/compiler/lib/src/ssa/builder.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.
 
 import 'dart:collection';
 
 import 'package:js_runtime/shared/embedded_names.dart';
 
 import '../closure.dart';
 import '../common.dart';
@@ skipping 390 matching lines @@
   }
 
   /**
    * Try to inline [element] within the correct context of the builder. The
    * insertion point is the state of the builder.
    */
   bool tryInlineMethod(Element element, Selector selector, TypeMask mask,
       List<HInstruction> providedArguments, ast.Node currentNode,
       {InterfaceType instanceType}) {
     registry
-        .addImpact(backend.registerStaticUse(element, forResolution: false));
+        .addImpact(backend.registerUsedElement(element, forResolution: false));
 
     if (backend.isJsInterop(element) && !element.isFactoryConstructor) {
       // We only inline factory JavaScript interop constructors.
       return false;
     }
 
     // Ensure that [element] is an implementation element.
     element = element.implementation;
 
     if (compiler.elementHasCompileTimeError(element)) return false;
@@ skipping 6329 matching lines @@
       this.oldReturnLocal,
       this.oldReturnType,
       this.oldResolvedAst,
       this.oldStack,
       this.oldLocalsHandler,
       this.inTryStatement,
       this.allFunctionsCalledOnce,
       this.oldElementInferenceResults)
       : super(function);
 }