Implement Command Line Private extension API

chrome/browser/extensions/api/command_line_private/command_line_private_api.h

+// 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.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_API_COMMAND_LINE_PRIVATE_COMMAND_LINE_PRIVATE_API_H__
+#define CHROME_BROWSER_EXTENSIONS_API_COMMAND_LINE_PRIVATE_COMMAND_LINE_PRIVATE_API_H__
+
+#include "chrome/browser/extensions/extension_function.h"
+
+namespace extensions {
+
+class CommandLinePrivateHasSwitchFunction : public SyncExtensionFunction {
+  DECLARE_EXTENSION_FUNCTION("commandLinePrivate.hasSwitch",
+                             COMMANDLINEPRIVATE_HASSWITCH)
+ protected:
+  virtual ~CommandLinePrivateHasSwitchFunction() {}
+
+  // ExtensionFunction:
+  virtual bool RunImpl() OVERRIDE;
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_COMMAND_LINE_PRIVATE_COMMAND_LINE_PRIVATE_API_H__