Add ClosureRepresentationInfo, the new public face of ClosureClassMap

pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart

Index: pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
diff --git a/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart b/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
index bb78b62ff45ec5f67ddd92ba8f1f3675aa0e47d2..f589becefa192723b66c6836cd0b6a35d89af3bf 100644
--- a/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
+++ b/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
@@ -125,10 +125,10 @@ class KernelAstAdapter extends KernelToElementMapMixin
       // Closures require a lookup one level deeper in the closure class mapper.
       if (target == null) {
         MethodElement originTargetFunction = originTarget;
-        ClosureClassMap classMap = _compiler.closureToClassMapper
-            .getClosureToClassMapping(originTargetFunction);
-        if (classMap.closureElement != null) {
-          target = kernel.localFunctions[classMap.closureElement];
+        ClosureRepresentationInfo classMap = _compiler.closureToClassMapper
+            .getClosureRepresentationInfo(originTargetFunction);
+        if (classMap.closureEntity != null) {
+          target = kernel.localFunctions[classMap.closureEntity];
         }
       }
     } else if (originTarget is FieldElement) {