Format all tests.

tests/language_strong/infinite_switch_label_test.dart

Index: tests/language_strong/infinite_switch_label_test.dart
diff --git a/tests/language_strong/infinite_switch_label_test.dart b/tests/language_strong/infinite_switch_label_test.dart
index 9a89b91e0533492f316e81c67319e8b1d41fff95..7eec42c99c16624cda82ab2e8393d3f5c270f6f5 100644
--- a/tests/language_strong/infinite_switch_label_test.dart
+++ b/tests/language_strong/infinite_switch_label_test.dart
@@ -22,11 +22,13 @@ void main() {
 void doSwitch(int target) {
   List list = [];
   switch (target) {
-    l0: case 0:
+    l0:
+    case 0:
       if (list.length > 10) throw list;
       list.add(0);
       continue l1;
-    l1: case 1:
+    l1:
+    case 1:
       if (list.length > 10) throw list;
       list.add(1);
       continue l0;
@@ -34,4 +36,4 @@ void doSwitch(int target) {
       list.add(2);
       continue l1;
   }
-}
+}