Format all tests.

tests/lib/mirrors/hot_set_field_test.dart

Index: tests/lib/mirrors/hot_set_field_test.dart
diff --git a/tests/lib/mirrors/hot_set_field_test.dart b/tests/lib/mirrors/hot_set_field_test.dart
index 1a9b440aa72f845ca5ee851285bfe092e363c508..6b1c70caad0a00c4e34489c239ffa9d1db6f465e 100644
--- a/tests/lib/mirrors/hot_set_field_test.dart
+++ b/tests/lib/mirrors/hot_set_field_test.dart
@@ -41,7 +41,8 @@ testPrivateWrongLibrary() {
   var selector = MirrorSystem.getSymbol('_field', reflectClass(Mirror).owner);
 
   for (int i = 0; i < (2 * optimizationThreshold); i++) {
-    Expect.throws(() => im.setField(selector, i), (e) => e is NoSuchMethodError);
+    Expect.throws(
+        () => im.setField(selector, i), (e) => e is NoSuchMethodError);
   }
 }