Add closure_test for kernel based members

pkg/compiler/lib/src/compiler.dart

Index: pkg/compiler/lib/src/compiler.dart
diff --git a/pkg/compiler/lib/src/compiler.dart b/pkg/compiler/lib/src/compiler.dart
index a0bd59f9763a375711c37fe106c90e8f2e2a5267..cd143cafad31acc107104abe7ec877ef8db618f2 100644
--- a/pkg/compiler/lib/src/compiler.dart
+++ b/pkg/compiler/lib/src/compiler.dart
@@ -194,7 +194,7 @@ abstract class Compiler {
         ? new KernelFrontEndStrategy(reporter, environment)
         : new ResolutionFrontEndStrategy(this);
     backendStrategy = options.loadFromDill
-        ? new KernelBackendStrategy(this)
+        ? new KernelBackendStrategyImpl(this)
         : new ElementBackendStrategy(this);
     _resolution = createResolution();
     types = new Types(_resolution);