Move API functions registrations out of ExtensionFunctionRegistry.

chrome/browser/extensions/system/system_api.h

-// 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.
-
-// This extension API contains system-wide preferences and functions that shall
-// be only available to component extensions.
-
-#ifndef CHROME_BROWSER_EXTENSIONS_SYSTEM_SYSTEM_API_H_
-#define CHROME_BROWSER_EXTENSIONS_SYSTEM_SYSTEM_API_H_
-
-#include "chrome/browser/extensions/extension_function.h"
-
-namespace extensions {
-
-class GetIncognitoModeAvailabilityFunction : public SyncExtensionFunction {
- public:
-  DECLARE_EXTENSION_FUNCTION("systemPrivate.getIncognitoModeAvailability",
-                             SYSTEMPRIVATE_GETINCOGNITOMODEAVAILABILITY)
-
- protected:
-  virtual ~GetIncognitoModeAvailabilityFunction() {}
-
-  // ExtensionFunction:
-  virtual bool RunImpl() OVERRIDE;
-};
-
-// API function which returns the status of system update.
-class GetUpdateStatusFunction : public SyncExtensionFunction {
- public:
-  DECLARE_EXTENSION_FUNCTION("systemPrivate.getUpdateStatus",
-                             SYSTEMPRIVATE_GETUPDATESTATUS)
-
- protected:
-  virtual ~GetUpdateStatusFunction() {}
-
-  // ExtensionFunction:
-  virtual bool RunImpl() OVERRIDE;
-};
-
-// Dispatches systemPrivate.onBrightnessChanged event for extensions.
-void DispatchBrightnessChangedEvent(int brightness, bool user_initiated);
-
-// Dispatches systemPrivate.onVolumeChanged event for extensions.
-void DispatchVolumeChangedEvent(double volume, bool is_volume_muted);
-
-// Dispatches systemPrivate.onScreenChanged event for extensions.
-void DispatchScreenUnlockedEvent();
-
-// Dispatches systemPrivate.onWokeUp event for extensions.
-void DispatchWokeUpEvent();
-
-}  // namespace extensions
-
-#endif  // CHROME_BROWSER_EXTENSIONS_SYSTEM_SYSTEM_API_H_