first cut: establishes base helper classes and main

developer_switch.cc

Index: developer_switch.cc
diff --git a/developer_switch.cc b/developer_switch.cc
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+++ b/developer_switch.cc
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+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// DeveloperSwitch implementation
+
+#include <sys/types.h>
+#include "developer_switch.h"
+
+namespace cros_boot_mode {
+
+DeveloperSwitch::DeveloperSwitch() { }
+DeveloperSwitch::~DeveloperSwitch() { }
+
+}  // namespace cros_boot_mode