Strong mode cleaning of many dart2js tests.

tests/compiler/dart2js/kernel/compile_from_dill_test.dart

Index: tests/compiler/dart2js/kernel/compile_from_dill_test.dart
diff --git a/tests/compiler/dart2js/kernel/compile_from_dill_test.dart b/tests/compiler/dart2js/kernel/compile_from_dill_test.dart
index b2ef74bc896bba64f78aaa8a28ceadbb0f602217..49b2add192f05bedabf92b035af5ee95dca7e23a 100644
--- a/tests/compiler/dart2js/kernel/compile_from_dill_test.dart
+++ b/tests/compiler/dart2js/kernel/compile_from_dill_test.dart
@@ -143,10 +143,12 @@ Future<ResultKind> mainInternal(List<String> args,
 
   checkResolutionEnqueuers(closedWorld1.backendUsage, closedWorld2.backendUsage,
       compiler1.enqueuer.resolution, compiler2.enqueuer.resolution,
-      elementEquivalence: equivalence.entityEquivalence,
+      elementEquivalence: (a, b) => equivalence.entityEquivalence(a, b),
       typeEquivalence: (ResolutionDartType a, DartType b) {
-    return equivalence.typeEquivalence(unalias(a), b);
-  }, elementFilter: elementFilter, verbose: arguments.verbose);
+        return equivalence.typeEquivalence(unalias(a), b);
+      },
+      elementFilter: elementFilter,
+      verbose: arguments.verbose);
 
   checkClosedWorlds(closedWorld1, closedWorld2,
       strategy: equivalence.defaultStrategy,
@@ -160,10 +162,12 @@ Future<ResultKind> mainInternal(List<String> args,
 
   checkCodegenEnqueuers(compiler1.enqueuer.codegenEnqueuerForTesting,
       compiler2.enqueuer.codegenEnqueuerForTesting,
-      elementEquivalence: equivalence.entityEquivalence,
+      elementEquivalence: (a, b) => equivalence.entityEquivalence(a, b),
       typeEquivalence: (ResolutionDartType a, DartType b) {
-    return equivalence.typeEquivalence(unalias(a), b);
-  }, elementFilter: elementFilter, verbose: arguments.verbose);
+        return equivalence.typeEquivalence(unalias(a), b);
+      },
+      elementFilter: elementFilter,
+      verbose: arguments.verbose);
 
   collector1.outputMap
       .forEach((OutputType outputType, Map<String, BufferedOutputSink> map1) {