Format all files under tools and utils directory.

tools/dom/src/dart2js_WrappedEvent.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.html;
 
 /**
  * Helper class to implement custom events which wrap DOM events.
  */
 class _WrappedEvent implements Event {
@@ skipping 13 matching lines @@
   bool get defaultPrevented => wrapped.defaultPrevented;
 
   int get eventPhase => wrapped.eventPhase;
 
   EventTarget get target => wrapped.target;
 
   int get timeStamp => wrapped.timeStamp;
 
   String get type => wrapped.type;
 
-  void _initEvent(String eventTypeArg, bool canBubbleArg,
-      bool cancelableArg) {
-    throw new UnsupportedError(
-        'Cannot initialize this Event.');
+  void _initEvent(String eventTypeArg, bool canBubbleArg, bool cancelableArg) {
+    throw new UnsupportedError('Cannot initialize this Event.');
   }
 
   void preventDefault() {
     wrapped.preventDefault();
   }
 
   void stopImmediatePropagation() {
     wrapped.stopImmediatePropagation();
   }
 
@@ skipping 31 matching lines @@
    *   from W3C.
    */
   // https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#extensions-to-event
   @Experimental()
   List<Node> get path => wrapped.path;
 
   dynamic get _get_currentTarget => wrapped._get_currentTarget;
 
   dynamic get _get_target => wrapped._get_target;
 }