Use Entity instead of Element in ConstantValue

pkg/compiler/lib/src/kernel/kernel.dart

 // Copyright (c) 2016, 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.md file.
 
 import 'dart:async';
 import 'dart:collection' show Queue;
 
 import 'package:kernel/ast.dart' as ir;
 import 'package:kernel/verifier.dart' show CheckParentPointers;
 
@@ skipping 202 matching lines @@
         if (cls.isMixinApplication) {
           MixinApplicationElement mixinApplication = cls;
           classNode.mixedInType = supertypeToIr(mixinApplication.mixinType);
         }
         classNode.parent = libraryToIr(cls.library);
         if (cls.isUnnamedMixinApplication) {
           classNode.enclosingLibrary.addClass(classNode);
         }
         cls.implementation
             .forEachMember((ClassElement enclosingClass, Element member) {
-          if (!compiler.resolution.hasBeenResolved(member)
-              && !member.isMalformed) {
+          if (!compiler.resolution.hasBeenResolved(member) &&
+              !member.isMalformed) {
             return;
           }
           if (member.enclosingClass.declaration != cls) {
             // TODO(het): figure out why impact_test triggers this
             //internalError(cls, "`$member` isn't mine.");
           } else if (member.isConstructor) {
             ConstructorElement constructor = member;
             ir.Member memberNode = functionToIr(member);
             if (!constructor.isRedirectingFactory) {
               classNode.addMember(memberNode);
@@ skipping 544 matching lines @@
 }
 
 class ConstructorTarget {
   final ConstructorElement element;
   final DartType type;
 
   ConstructorTarget(this.element, this.type);
 
   String toString() => "ConstructorTarget($element, $type)";
 }