Format all tests.

tests/language/prefix101_test.dart

Index: tests/language/prefix101_test.dart
diff --git a/tests/language/prefix101_test.dart b/tests/language/prefix101_test.dart
index b6e72b1fadee37ee7651d60f291032aac3f40b49..206b4275a631a6767d0fd8f9f83a0de74a0f142a 100644
--- a/tests/language/prefix101_test.dart
+++ b/tests/language/prefix101_test.dart
@@ -24,6 +24,7 @@ class Prefix101Test {
     result += lib101.Library10.static_fld;
     Expect.equals(10, result);
   }
+
   static Test2() {
     var result = 0;
     var obj = new lib101.Library11(4);
@@ -36,10 +37,12 @@ class Prefix101Test {
     result += lib101.Library11.static_fld;
     Expect.equals(10, result);
   }
+
   static Test3() {
     Expect.equals(10, lib101.top_level10);
     Expect.equals(20, lib101.top_level_func10());
   }
+
   static Test4() {
     Expect.equals(100, lib101.top_level11);
     Expect.equals(200, lib101.top_level_func11());