diff --git a/gin/runner.cc b/gin/runner.cc
new file mode 100644
index 0000000..6f018b1
--- /dev/null
+++ b/gin/runner.cc
@@ -0,0 +1,24 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "gin/runner.h"
+
+namespace gin {
+
+Runner::Runner() : weak_factory_(this) {
+}
+
+Runner::~Runner() {
+}
+
+Runner::Scope::Scope(Runner* runner)
+    : isolate_scope_(runner->GetContextHolder()->isolate()),
+      handle_scope_(runner->GetContextHolder()->isolate()),
+      scope_(runner->GetContextHolder()->context()) {
+}
+
+Runner::Scope::~Scope() {
+}
+
+}  // namespace gin