Re-land "Format all multitests"

tests/language_strong/if_null_behavior_test.dart

Index: tests/language_strong/if_null_behavior_test.dart
diff --git a/tests/language_strong/if_null_behavior_test.dart b/tests/language_strong/if_null_behavior_test.dart
index 6ad6d5271cb13fa8a7618dbdb624aa23d38b5e3a..206fc3a25d8112d60ece641fb42b2e16c3d5bc81 100644
--- a/tests/language_strong/if_null_behavior_test.dart
+++ b/tests/language_strong/if_null_behavior_test.dart
@@ -15,12 +15,16 @@ class A {
 }
 
 class B extends A {
-  B(String v) : b = v, super(v);
+  B(String v)
+      : b = v,
+        super(v);
   final String b;
 }
 
 class C extends A {
-  C(String v) : c = v, super(v);
+  C(String v)
+      : c = v,
+        super(v);
   final String c;
 }