Split getClosureRepresentationInfo into MemberEntity and (ir/ast) nodes

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 '../closure.dart';
 import '../common.dart';
 import '../constants/values.dart';
 import '../common_elements.dart';
@@ skipping 416 matching lines @@
 
   /// Returns the [JumpTarget] defined by the for-in statement [node] or `null`
   /// if [node] is not a jump target.
   JumpTarget getJumpTargetForForIn(ir.ForInStatement node);
 
   /// Returns the [JumpTarget] defined by the while statement [node] or `null`
   /// if [node] is not a jump target.
   JumpTarget getJumpTargetForWhile(ir.WhileStatement node);
 
   /// Returns the [CapturedLoopScope] for the loop [node] in
-  /// [closureClassMaps].
+  /// [closureLookup].
+  // TODO(johnniwinther): Remove this when [KernelAstAdapter] is deleted.
   CapturedLoopScope getCapturedLoopScope(
       ClosureDataLookup closureLookup, ir.TreeNode node);
+
+  /// Returns the [ClosureRepresentationInfo] for the local function [node] in
+  /// [closureLookup].
+  // TODO(johnniwinther): Remove this when [KernelAstAdapter] is deleted.
+  ClosureRepresentationInfo getClosureRepresentationInfo(
+      ClosureDataLookup closureLookup, ir.TreeNode node);
 }
 
 /// Comparator for the canonical order or named arguments.
 // TODO(johnniwinther): Remove this when named parameters are sorted in dill.
 int namedOrdering(ir.VariableDeclaration a, ir.VariableDeclaration b) {
   return a.name.compareTo(b.name);
 }
 
 SourceSpan computeSourceSpanFromTreeNode(ir.TreeNode node) {
   // TODO(johnniwinther): Use [ir.Location] directly as a [SourceSpan].
   Uri uri;
   int offset;
   while (node != null) {
     if (node.fileOffset != ir.TreeNode.noOffset) {
       offset = node.fileOffset;
       uri = Uri.parse(node.location.file);
       break;
     }
     node = node.parent;
   }
   if (uri != null) {
     return new SourceSpan(uri, offset, offset + 1);
   }
   return null;
 }