Format all tests.

tests/language/gvn_interceptor_test.dart

Index: tests/language/gvn_interceptor_test.dart
diff --git a/tests/language/gvn_interceptor_test.dart b/tests/language/gvn_interceptor_test.dart
index d638a232ce6fc2c1ef9b21f7b34f46e50ca925c9..51f109edf6fb2bc6fbda4655725a19a54747e5ec 100644
--- a/tests/language/gvn_interceptor_test.dart
+++ b/tests/language/gvn_interceptor_test.dart
@@ -6,7 +6,7 @@ import "package:expect/expect.dart";
 
 foo(a, index) {
   if (a.length < index) {
-   for (int i = a.length; i <= index; i++) a.add(i);
+    for (int i = a.length; i <= index; i++) a.add(i);
   }
   // dart2js was reusing the a.length from above.
   return a[a.length - 1];