Merge kernel closure conversion into the Dart SDK

pkg/kernel/lib/class_hierarchy.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 file.
 library kernel.class_hierarchy;
 
 import 'ast.dart';
 import 'dart:math';
 import 'dart:typed_data';
 import 'type_algebra.dart';
 
@@ skipping 347 matching lines @@
     List<Member> declared =
         setters ? info.declaredSetters : info.declaredGettersAndCalls;
     void inheritFrom(Supertype type) {
       if (type == null) return;
       List<Member> inherited = _buildInterfaceMembers(
           type.classNode, _infoFor[type.classNode],
           setters: setters);
       inherited = _getUnshadowedInheritedMembers(declared, inherited);
       allInheritedMembers = _merge(allInheritedMembers, inherited);
     }
+
     inheritFrom(classNode.supertype);
     inheritFrom(classNode.mixedInType);
     classNode.implementedTypes.forEach(inheritFrom);
     members = _inheritMembers(declared, allInheritedMembers);
     if (setters) {
       info.interfaceSetters = members;
     } else {
       info.interfaceGettersAndCalls = members;
     }
     return members;
@@ skipping 469 matching lines @@
 
   /// Non-final instance fields and setters implemented by this class
   /// (declared or inherited).
   List<Member> implementedSetters;
 
   List<Member> interfaceGettersAndCalls;
   List<Member> interfaceSetters;
 
   _ClassInfo(this.classNode);
 }