Format all files under the sdk/lib directory.

sdk/lib/async/zone.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.
 
 part of dart.async;
 
 typedef R ZoneCallback<R>();
 typedef R ZoneUnaryCallback<R, T>(T arg);
 typedef R ZoneBinaryCallback<R, T1, T2>(T1 arg1, T2 arg2);
 
@@ skipping 1363 matching lines @@
 
   R runBinary<R, T1, T2>(R f(T1 arg1, T2 arg2), T1 arg1, T2 arg2) {
     if (identical(Zone._current, _ROOT_ZONE)) return f(arg1, arg2);
     return _rootRunBinary(null, null, this, f, arg1, arg2);
   }
 
   ZoneCallback<R> registerCallback<R>(R f()) => f;
 
   ZoneUnaryCallback<R, T> registerUnaryCallback<R, T>(R f(T arg)) => f;
 
-  ZoneBinaryCallback<R, T1, T2>
-      registerBinaryCallback<R, T1, T2>(R f(T1 arg1, T2 arg2)) => f;
+  ZoneBinaryCallback<R, T1, T2> registerBinaryCallback<R, T1, T2>(
+          R f(T1 arg1, T2 arg2)) =>
+      f;
 
   AsyncError errorCallback(Object error, StackTrace stackTrace) => null;
 
   void scheduleMicrotask(void f()) {
     _rootScheduleMicrotask(null, null, this, f);
   }
 
   Timer createTimer(Duration duration, void f()) {
     return Timer._createTimer(duration, f);
   }
@@ skipping 62 matching lines @@
         handleUncaughtError: errorHandler);
   }
   Zone zone = Zone.current
       .fork(specification: zoneSpecification, zoneValues: zoneValues);
   if (onError != null) {
     return zone.runGuarded(body);
   } else {
     return zone.run(body);
   }
 }