refactor: rename the atom directory to shell

shell/common/api/locker.cc

@@ -0,0 +1,16 @@
+// Copyright 2014 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.chromium file.
+
+#include "atom/common/api/locker.h"
+
+namespace mate {
+
+Locker::Locker(v8::Isolate* isolate) {
+  if (IsBrowserProcess())
+    locker_.reset(new v8::Locker(isolate));
+}
+
+Locker::~Locker() {}
+
+}  // namespace mate