Format all tests.

tests/language_strong/string_test.dart

Index: tests/language_strong/string_test.dart
diff --git a/tests/language_strong/string_test.dart b/tests/language_strong/string_test.dart
index 70e77cf4efc48d2eead59f07cadf1f820f91b6ea..37183555b4053190e78d627e55753fd24d8ca552 100644
--- a/tests/language_strong/string_test.dart
+++ b/tests/language_strong/string_test.dart
@@ -6,7 +6,6 @@
 import "package:expect/expect.dart";
 
 class StringTest {
-
   static testMain() {
     testCodePoints();
     testNoSuchMethod();
@@ -34,7 +33,7 @@ class StringTest {
     String a = "Hello";
     bool exception_caught = false;
     try {
-      a[1] = 12;  // Throw exception.
+      a[1] = 12; // Throw exception.
     } on NoSuchMethodError catch (e) {
       exception_caught = true;
     }