Reformat untouched files.

tests/compiler/dart2js/type_mask2_test.dart

Index: tests/compiler/dart2js/type_mask2_test.dart
diff --git a/tests/compiler/dart2js/type_mask2_test.dart b/tests/compiler/dart2js/type_mask2_test.dart
index 6aac3a1c3c66a048d65d7a7992b7c9fc544387d0..524a4009e07bd09ced7baab119cb75ef384eab5f 100644
--- a/tests/compiler/dart2js/type_mask2_test.dart
+++ b/tests/compiler/dart2js/type_mask2_test.dart
@@ -86,15 +86,13 @@ checkMasks(ClosedWorld closedWorld, List<ClassElement> allClasses,
 }
 
 Future testUnionTypeMaskFlatten() async {
-  TypeEnvironment env = await TypeEnvironment.create(
-      r"""
+  TypeEnvironment env = await TypeEnvironment.create(r"""
       class A {}
       class B {}
       class C extends A {}
       class D implements A {}
       class E extends B implements A {}
-      """,
-      mainSource: r"""
+      """, mainSource: r"""
       main() {
         new A();
         new B();
@@ -102,8 +100,7 @@ Future testUnionTypeMaskFlatten() async {
         new D();
         new E();
       }
-      """,
-      useMockCompiler: false);
+      """, useMockCompiler: false);
 
   ClosedWorld closedWorld = env.closedWorld;