dart2js: run dartfmt on tests

tests/compiler/dart2js_extra/private_symbol_literal_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Test symbol literals with underscores.
 // These are currently unsupported by dart2js.
 
 library symbol_literal_test;
 
 main() {
   print(#a);
-  print(#_a); /// 01: compile-time error
+  print(#_a);
+
+  /// 01: compile-time error

[Siggi Cherem (dart-lang), 2016/09/16 20:55:22]

revert

[Harry Terkelsen, 2016/09/16 21:44:03]

Done.

 
   print(#a.b);
-  print(#_a.b); /// 02: compile-time error
-  print(#a._b); /// 03: compile-time error
+  print(#_a.b);
+
+  /// 02: compile-time error
+  print(#a._b);
+
+  /// 03: compile-time error
 
   print(#a.b.c);
-  print(#_a.b.c); /// 04: compile-time error
-  print(#a._b.c); /// 05: compile-time error
-  print(#a.b._c); /// 06: compile-time error
+  print(#_a.b.c);
+
+  /// 04: compile-time error
+  print(#a._b.c);
+
+  /// 05: compile-time error
+  print(#a.b._c);
+
+  /// 06: compile-time error
 }