Format all tests.

tests/lib_strong/html/trusted_html_tree_sanitizer_test.dart

Index: tests/lib_strong/html/trusted_html_tree_sanitizer_test.dart
diff --git a/tests/lib_strong/html/trusted_html_tree_sanitizer_test.dart b/tests/lib_strong/html/trusted_html_tree_sanitizer_test.dart
index 3f9a534061e0aff50869859a9998db64320e853c..ac6eae610f51a89d54288954bbffb7a278052e9c 100644
--- a/tests/lib_strong/html/trusted_html_tree_sanitizer_test.dart
+++ b/tests/lib_strong/html/trusted_html_tree_sanitizer_test.dart
@@ -45,8 +45,8 @@ main() {
     test("appendHtml", () {
       var oldStuff = document.body.innerHtml;
       var newStuff = '<div rumplestiltskin="value">content</div>';
-      document.body.appendHtml(newStuff,
-          treeSanitizer: NodeTreeSanitizer.trusted);
+      document.body
+          .appendHtml(newStuff, treeSanitizer: NodeTreeSanitizer.trusted);
       expect(document.body.innerHtml, oldStuff + newStuff);
     });
   });