Format all files under tools and utils directory.

tools/dom/src/CrossFrameTypes.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 html;
 
 /**
  * Top-level container for a browser tab or window.
  *
  * In a web browser, a [WindowBase] object represents any browser window. This
@@ skipping 121 matching lines @@
   /**
    * Sends a cross-origin message.
    *
    * ## Other resources
    *
    * * [window.postMessage](https://developer.mozilla.org/en-US/docs/Web/API/Window.postMessage)
    *   from MDN.
    * * [Cross-document messaging](https://html.spec.whatwg.org/multipage/comms.html#web-messaging)
    *   from WHATWG.
    */
-  void postMessage(var message, String targetOrigin, [List<MessagePort> messagePorts]);
+  void postMessage(var message, String targetOrigin,
+      [List<MessagePort> messagePorts]);
 }
 
 abstract class LocationBase {
   void set href(String val);
 }
 
 abstract class HistoryBase {
   void back();
   void forward();
   void go(int distance);
 }