Support locals in compile_from_dill_test.

pkg/compiler/lib/src/kernel/element_map.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.
 
 import 'package:kernel/ast.dart' as ir;
 
 import '../common.dart';
 import '../common/names.dart';
 import '../constants/constructors.dart';
 import '../constants/expressions.dart';
@@ skipping 924 matching lines @@
   /// type [mask].
   TypeMask selectorTypeOf(Selector selector, TypeMask mask);
 
   /// Returns the returned type annotation in the [nativeBehavior].
   TypeMask typeFromNativeBehavior(
       native.NativeBehavior nativeBehavior, ClosedWorld closedWorld);
 }
 
 /// Map from kernel IR nodes to local entities.
 abstract class KernelToLocalsMap {
+  /// The member currently being built.
+  MemberEntity get currentMember;
+
   // TODO(johnniwinther): Make these return the [KernelToLocalsMap] to use from
   // now on.
   /// Call to notify that [member] is currently being inlined.
   void enterInlinedMember(MemberEntity member);
 
   /// Call to notify that [member] is no longer being inlined.
   void leaveInlinedMember(MemberEntity member);
 
   /// Returns the [Local] for [node].
   Local getLocal(ir.VariableDeclaration node);
 
   /// Returns the [JumpTarget] for the branch in [node].
   // TODO(johnniwinther): Split this by kind of [node]?
   JumpTarget getJumpTarget(ir.TreeNode node, {bool isContinueTarget: false});
 }