Remove the usbPrivate API.

extensions/browser/api/usb_private/usb_private_api.h

-// 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 file.
-
-#ifndef EXTENSIONS_BROWSER_API_USB_USB_PRIVATE_API_H_
-#define EXTENSIONS_BROWSER_API_USB_USB_PRIVATE_API_H_
-
-#include "extensions/browser/api/usb/usb_api.h"
-#include "extensions/common/api/usb_private.h"
-
-namespace extensions {
-
-class UsbPrivateGetDevicesFunction : public UsbAsyncApiFunction {
- public:
-  DECLARE_EXTENSION_FUNCTION("usbPrivate.getDevices", USBPRIVATE_GETDEVICES)
-
-  UsbPrivateGetDevicesFunction();
-
-  virtual bool Prepare() OVERRIDE;
-  virtual void AsyncWorkStart() OVERRIDE;
-
- protected:
-  virtual ~UsbPrivateGetDevicesFunction();
-
- private:
-  scoped_ptr<extensions::core_api::usb_private::GetDevices::Params> parameters_;
-};
-
-class UsbPrivateGetDeviceInfoFunction : public UsbAsyncApiFunction {
- public:
-  DECLARE_EXTENSION_FUNCTION("usbPrivate.getDeviceInfo",
-                             USBPRIVATE_GETDEVICEINFO)
-
-  UsbPrivateGetDeviceInfoFunction();
-
-  virtual bool Prepare() OVERRIDE;
-  virtual void AsyncWorkStart() OVERRIDE;
-
- protected:
-  virtual ~UsbPrivateGetDeviceInfoFunction();
-
- private:
-  scoped_ptr<extensions::core_api::usb_private::GetDeviceInfo::Params>
-      parameters_;
-};
-
-}  // namespace extensions
-
-#endif  // EXTENSIONS_BROWSER_API_USB_USB_API_H_