Format all files under tools and utils directory.

tools/dom/src/dartium_WrappedEvent.dart

Index: tools/dom/src/dartium_WrappedEvent.dart
diff --git a/tools/dom/src/dartium_WrappedEvent.dart b/tools/dom/src/dartium_WrappedEvent.dart
index a4e0ace767910038d7ee7c7a627b1dc162c28c24..133adb57b15b3db687f7b50fba733c8f7292d0b8 100644
--- a/tools/dom/src/dartium_WrappedEvent.dart
+++ b/tools/dom/src/dartium_WrappedEvent.dart
@@ -37,10 +37,8 @@ class _WrappedEvent implements Event {
 
   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() {