Format all tests.

tests/corelib/stacktrace_current_test.dart

 // Copyright (c) 2015, 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.
 
 import "dart:convert" show LineSplitter;
 
 import "package:expect/expect.dart";
 
 void main() {
   var st0;
   var st1;
   // Primitive way to get stack trace,.
-  try { throw 0; } catch (_, s) { st0 = s; }
+  try {
+    throw 0;
+  } catch (_, s) {
+    st0 = s;
+  }
   st1 = StackTrace.current;
 
   var st0s = findMain(st0);
   var st1s = findMain(st1);
   // Stack traces are not equal (contains at least a different line number,
   // and possible different frame numbers).
   // They are *similar*, so check that they agree on everything but numbers.
   var digits = new RegExp(r"\d+");
   Expect.equals(st0s.replaceAll(digits, "0"), st1s.replaceAll(digits, "0"));
 }
 
 String findMain(StackTrace stack) {
   var string = "$stack";
   var lines = LineSplitter.split(string).toList();
   while (lines.isNotEmpty && !lines.first.contains("main")) {
     lines.removeAt(0);
   }
   return lines.join("\n");
 }