Format all dart: library files

sdk/lib/async/async_error.dart

 // Copyright (c) 2012, 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;
 
-_invokeErrorHandler(Function errorHandler,
-                    Object error, StackTrace stackTrace) {
+_invokeErrorHandler(
+    Function errorHandler, Object error, StackTrace stackTrace) {
   if (errorHandler is ZoneBinaryCallback) {
     return errorHandler(error, stackTrace);
   } else {
     ZoneUnaryCallback unaryErrorHandler = errorHandler;
     return unaryErrorHandler(error);
   }
 }
 
 Function _registerErrorHandler<R>(Function errorHandler, Zone zone) {
   if (errorHandler is ZoneBinaryCallback) {
@@ skipping 19 matching lines @@
 
   String toString() {
     String result = "Uncaught Error: ${error}";
 
     if (stackTrace != null) {
       result += "\nStack Trace:\n$stackTrace";
     }
     return result;
   }
 }