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 94fb3f53d68140e28b9819b04f20caee0b7e7bae..fcb81e28ac3dd8b86e72d354af4a0d018c8dee58 100644
--- a/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
+++ b/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
@@ -124,10 +124,10 @@ 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) {