Format all tests.

tests/corelib/list_replace_range_test.dart

Index: tests/corelib/list_replace_range_test.dart
diff --git a/tests/corelib/list_replace_range_test.dart b/tests/corelib/list_replace_range_test.dart
index 26f016aa0fd14f0ffb430ac1edcf3b41cc7e8308..03008c1c378a5b3c18f850d678d3069b83b48ec8 100644
--- a/tests/corelib/list_replace_range_test.dart
+++ b/tests/corelib/list_replace_range_test.dart
@@ -26,9 +26,15 @@ 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();
 }