Format all tests.

tests/corelib_strong/list_fill_range_test.dart

Index: tests/corelib_strong/list_fill_range_test.dart
diff --git a/tests/corelib_strong/list_fill_range_test.dart b/tests/corelib_strong/list_fill_range_test.dart
index 5051d9cf1642ec739cf6a4c24dd7b6621100a324..6d06f47f1dcf5a96964d794c3d7a142bd54b101e 100644
--- a/tests/corelib_strong/list_fill_range_test.dart
+++ b/tests/corelib_strong/list_fill_range_test.dart
@@ -24,9 +24,15 @@ class MyList extends ListBase {
   List list;
   MyList(this.list);
   get length => list.length;
-  set length(value) { list.length = value; }
+  set length(value) {
+    list.length = value;
+  }
+
   operator [](index) => list[index];
-  operator []=(index, val) { list[index] = val; }
+  operator []=(index, val) {
+    list[index] = val;
+  }
+
   toString() => list.toString();
 }