Reland: Introduce the devices Mojo app

device/usb/public/cpp/device_manager_factory.h

-// Copyright 2015 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 DEVICE_USB_PUBLIC_CPP_DEVICE_MANAGER_FACTORY_H_
-#define DEVICE_USB_PUBLIC_CPP_DEVICE_MANAGER_FACTORY_H_
-
-#include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
-#include "device/usb/public/interfaces/device_manager.mojom.h"
-#include "third_party/mojo/src/mojo/public/cpp/bindings/interface_request.h"
-
-namespace device {
-namespace usb {
-
-class DeviceManagerDelegate;
-
-// Public interface to construct an implementation of the DeviceManager service.
-class DeviceManagerFactory {
- public:
-  // Builds a new DeviceManager instance to fulfill a request. The service is
-  // bound to the lifetime of |request|'s MessagePipe, and it takes ownership of
-  // |delegate|.
-  static void Build(mojo::InterfaceRequest<DeviceManager> request,
-                    scoped_ptr<DeviceManagerDelegate> delegate);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(DeviceManagerFactory);
-};
-
-}  // namespace usb
-}  // namespace device
-
-#endif  // DEVICE_USB_PUBLIC_CPP_DEVICE_MANAGER_FACTORY_H_