Format all tests.

tests/lib_strong/html/datalistelement_test.dart

Index: tests/lib_strong/html/datalistelement_test.dart
diff --git a/tests/lib_strong/html/datalistelement_test.dart b/tests/lib_strong/html/datalistelement_test.dart
index f831a4548a45c177eb7c7a687bf65c7654ea00b5..07a3835e953138dca28b69a192e0bddabd3bfb92 100644
--- a/tests/lib_strong/html/datalistelement_test.dart
+++ b/tests/lib_strong/html/datalistelement_test.dart
@@ -13,9 +13,9 @@ main() {
   var div;
 
   setUp(() {
-      div = new DivElement();
-      document.body.append(div);
-      div.innerHtml = """
+    div = new DivElement();
+    document.body.append(div);
+    div.innerHtml = """
 <input id="input" list="browsers" />
 <datalist id="browsers">
   <option value="Chrome">
@@ -25,11 +25,11 @@ main() {
   <option value="Safari">
 </datalist>
 """;
-    });
+  });
 
   tearDown(() {
-      document.body.nodes.removeLast();
-    });
+    document.body.nodes.removeLast();
+  });
 
   // Support is checked in element_types test.
   var expectation = DataListElement.supported ? returnsNormally : throws;