Re-land "Format all multitests"

tests/language_strong/const_constructor2_test.dart

Index: tests/language_strong/const_constructor2_test.dart
diff --git a/tests/language_strong/const_constructor2_test.dart b/tests/language_strong/const_constructor2_test.dart
index fe42eaf7c4e12ed3d92926a5b900e42ec9767f15..57c702421834a776cc1f310adb899ff928744b37 100644
--- a/tests/language_strong/const_constructor2_test.dart
+++ b/tests/language_strong/const_constructor2_test.dart
@@ -75,4 +75,4 @@ main() {
   const E e4 = const E.redirecting2(''); //# 22: checked mode compile-time error
   const E e5 = const E.redirecting3(0); //# 23: ok
   const E e6 = const E.redirecting3(''); //# 24: checked mode compile-time error
-}
+}