Check equivalence on impact computed with KernelWorldBuilder.

pkg/compiler/lib/src/kernel/element_adapter.dart

Index: pkg/compiler/lib/src/kernel/element_adapter.dart
diff --git a/pkg/compiler/lib/src/kernel/element_adapter.dart b/pkg/compiler/lib/src/kernel/element_adapter.dart
index 43aae2db3e69fbc44cdd6e26a4badd6a94a45c87..6e586acbf1d0b3f11b241f65208468baafbff2ab 100644
--- a/pkg/compiler/lib/src/kernel/element_adapter.dart
+++ b/pkg/compiler/lib/src/kernel/element_adapter.dart
@@ -139,7 +139,8 @@ abstract class KernelElementAdapterMixin implements KernelElementAdapter {
     if (node is ir.PropertyGet) return getGetterSelector(node);
     if (node is ir.PropertySet) return getSetterSelector(node);
     if (node is ir.InvocationExpression) return getInvocationSelector(node);
-    throw new SpannableAssertionFailure(CURRENT_ELEMENT_SPANNABLE,
+    throw new SpannableAssertionFailure(
+        CURRENT_ELEMENT_SPANNABLE,
         "Can only get the selector for a property get or an invocation: "
         "${node}");
   }