Support --use-kernel in memory_compiler

tests/compiler/dart2js/kernel/literals_test.dart

Index: tests/compiler/dart2js/kernel/literals_test.dart
diff --git a/tests/compiler/dart2js/kernel/literals_test.dart b/tests/compiler/dart2js/kernel/literals_test.dart
index 5cc337af2cf065de9eab8eaac0331bbb9fff150d..279f9821fb150ba16822ca68dcb093f3198a4682 100644
--- a/tests/compiler/dart2js/kernel/literals_test.dart
+++ b/tests/compiler/dart2js/kernel/literals_test.dart
@@ -14,7 +14,8 @@ main() {
     return check('main() { return const [1, 2, 3]; }');
   });
   test('compile function that returns a literal map', () {
-    return check('main() { return {"a": 1, "b": 2, "c": 3}; }');
+    return check('main() { return {"a": 1, "b": 2, "c": 3}; }',
+        useKernelInSsa: true);

[Siggi Cherem (dart-lang), 2017/08/23 20:45:18]

what about all the other check calls in this file?

[Johnni Winther, 2017/08/24 06:47:54]

They work with 'useKernel'.

[Siggi Cherem (dart-lang), 2017/08/24 15:32:15]

sorry - the `useKernel: false` in `compile` misled me to believe that both flags
were off. Makes sense now.

   });
   test('compile function that returns a const map', () {
     return check('main() { return const {"a": 1, "b": 2, "c": 3}; }');