Format all tests.

tests/language_strong/canonical_const3_test.dart

Index: tests/language_strong/canonical_const3_test.dart
diff --git a/tests/language_strong/canonical_const3_test.dart b/tests/language_strong/canonical_const3_test.dart
index 7dad367815c7df02357f8971af353a1c6ecc302d..938f0dbe96c37cd3789ec489e742a335005c6c87 100644
--- a/tests/language_strong/canonical_const3_test.dart
+++ b/tests/language_strong/canonical_const3_test.dart
@@ -6,7 +6,6 @@
 
 import "package:expect/expect.dart";
 
-
 main() {
   Expect.isFalse(identical(new Duration(days: 1), new Duration(days: 1)));
   Expect.isTrue(identical(const Duration(days: 2), const Duration(days: 2)));
@@ -14,7 +13,6 @@ main() {
   Expect.isTrue(identical(const F(main), const F(main)));
 }
 
-
 class A {
   final a;
   const A(v) : a = v + 3.4;
@@ -22,7 +20,9 @@ class A {
 
 class B extends A {
   final b;
-  const B(v) : super(v), b = v + 1.0;
+  const B(v)
+      : super(v),
+        b = v + 1.0;
 }
 
 class F {