dbus: add ObjectPath type

dbus/object_path.cc

Index: dbus/object_path.cc
diff --git a/dbus/object_path.cc b/dbus/object_path.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2dda466dd23b3ac74a69e41dfcf33de1b0c7ae1a
--- /dev/null
+++ b/dbus/object_path.cc
@@ -0,0 +1,21 @@
+// Copyright (c) 2012 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 "dbus/object_path.h"
+
+namespace dbus {
+
+bool ObjectPath::operator<(const ObjectPath& that) const {
+  return value_ < that.value_;
+}
+
+bool ObjectPath::operator==(const ObjectPath& that) const {
+  return value_ == that.value_;
+}
+
+bool ObjectPath::operator!=(const ObjectPath& that) const {
+  return value_ != that.value_;
+}
+
+} // namespace dbus