Format all files under tools and utils directory.

tools/dom/src/dartium_CustomElementSupport.dart

Index: tools/dom/src/dartium_CustomElementSupport.dart
diff --git a/tools/dom/src/dartium_CustomElementSupport.dart b/tools/dom/src/dartium_CustomElementSupport.dart
index c957145bae339af04774198e472440e238d2e49b..630d1e38c28231645d8a8adf47b23fcfe61fec9e 100644
--- a/tools/dom/src/dartium_CustomElementSupport.dart
+++ b/tools/dom/src/dartium_CustomElementSupport.dart
@@ -10,15 +10,14 @@ class _VMElementUpgrader implements ElementUpgrader {
   final Type _nativeType;
   final String _extendsTag;
 
-  _VMElementUpgrader(Document document, Type type, String extendsTag) :
-      _type = type,
-      _extendsTag = extendsTag,
-      _nativeType = _validateCustomType(type).reflectedType {
-
+  _VMElementUpgrader(Document document, Type type, String extendsTag)
+      : _type = type,
+        _extendsTag = extendsTag,
+        _nativeType = _validateCustomType(type).reflectedType {
     if (extendsTag == null) {
       if (_nativeType != HtmlElement) {
         throw new UnsupportedError('Class must provide extendsTag if base '
-              'native class is not HtmlElement');
+            'native class is not HtmlElement');
       }
     } else {
       if (document.createElement(extendsTag).runtimeType != _nativeType) {
@@ -78,7 +77,7 @@ ClassMirror _validateCustomType(Type type) {
       cls != null && cls.qualifiedName == elementName;
   ClassMirror superClass = cls.superclass;
   ClassMirror nativeClass = _isBuiltinType(superClass) ? superClass : null;
-  while(!isRoot(superClass) && !isElement(superClass)) {
+  while (!isRoot(superClass) && !isElement(superClass)) {
     superClass = superClass.superclass;
     if (nativeClass == null && _isBuiltinType(superClass)) {
       nativeClass = superClass;
@@ -87,7 +86,6 @@ ClassMirror _validateCustomType(Type type) {
   return nativeClass;
 }
 
-
 bool _isBuiltinType(ClassMirror cls) {
   // TODO(vsm): Find a less hackish way to do this.
   LibraryMirror lib = cls.owner;