Format all tests.

tests/corelib_strong/stacktrace_fromstring_test.dart

Index: tests/corelib_strong/stacktrace_fromstring_test.dart
diff --git a/tests/corelib_strong/stacktrace_fromstring_test.dart b/tests/corelib_strong/stacktrace_fromstring_test.dart
index eb4d6b0a8579a87a03e6119b23556aa77d14a579..b42aba3ed94363fe094d233cddb6578b3b0f557e 100644
--- a/tests/corelib_strong/stacktrace_fromstring_test.dart
+++ b/tests/corelib_strong/stacktrace_fromstring_test.dart
@@ -8,7 +8,11 @@ import "dart:async";
 
 void main() {
   StackTrace stack;
-  try { throw 0; } catch (e, s) { stack = s; }
+  try {
+    throw 0;
+  } catch (e, s) {
+    stack = s;
+  }
   var string = "$stack";
   StackTrace stringTrace = new StackTrace.fromString(string);
   Expect.isTrue(stringTrace is StackTrace);