Add ConstructorBodyEntity

pkg/compiler/lib/src/resolution/resolution_strategy.dart

 // Copyright (c) 2017, 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.resolution_strategy;
 
 import 'package:front_end/src/fasta/scanner.dart' show Token;
 
 import '../common.dart';
 import '../common_elements.dart';
@@ skipping 502 matching lines @@
       covariant ClassElement cls, void f(ConstructorEntity constructor)) {
     cls.ensureResolved(_resolution);
     for (ConstructorElement constructor in cls.implementation.constructors) {
       _resolution.ensureResolved(constructor.declaration);
       if (constructor.isRedirectingFactory) continue;
       f(constructor);
     }
   }
 
   @override
+  void forEachConstructorBody(
+      covariant ClassElement cls, void f(ConstructorBodyEntity constructor)) {
+    cls.forEachConstructorBody(f);
+  }
+
+  @override
   ClassEntity getSuperClass(covariant ClassElement cls,
       {bool skipUnnamedMixinApplications: false}) {
     cls.ensureResolved(_resolution);
     ClassElement superclass = cls.superclass;
     if (skipUnnamedMixinApplications) {
       while (superclass != null && superclass.isUnnamedMixinApplication) {
         superclass = superclass.superclass;
       }
     }
     return superclass;
@@ skipping 339 matching lines @@
   @override
   WorkItem createWorkItem(MemberElement element) {
     assert(element.isDeclaration, failedAt(element));
     if (element.isMalformed) return null;
 
     assert(element is AnalyzableElement,
         failedAt(element, 'Element $element is not analyzable.'));
     return _resolution.createWorkItem(element);
   }
 }