Split getClosureRepresentationInfo into MemberEntity and (ir/ast) nodes

pkg/compiler/lib/src/js_model/locals.dart

Index: pkg/compiler/lib/src/js_model/locals.dart
diff --git a/pkg/compiler/lib/src/js_model/locals.dart b/pkg/compiler/lib/src/js_model/locals.dart
index f89bf5c1da2d3473095f2e558b105718956560a1..4adef27e5aa2b119ba9a381d30fb8de265d54ed0 100644
--- a/pkg/compiler/lib/src/js_model/locals.dart
+++ b/pkg/compiler/lib/src/js_model/locals.dart
@@ -168,6 +168,12 @@ class KernelToLocalsMapImpl implements KernelToLocalsMap {
       ClosureDataLookup closureLookup, ir.TreeNode node) {
     return closureLookup.getCapturedLoopScope(node);
   }
+
+  @override
+  ClosureRepresentationInfo getClosureRepresentationInfo(
+      ClosureDataLookup closureLookup, ir.TreeNode node) {
+    return closureLookup.getClosureRepresentationInfo(node);
+  }
 }
 
 class JumpVisitor extends ir.Visitor {