Web MIDI: remove old Windows backend

media/midi/midi_manager_win.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 MEDIA_MIDI_MIDI_MANAGER_WIN_H_
-#define MEDIA_MIDI_MIDI_MANAGER_WIN_H_
-
-#include <stdint.h>
-
-#include <memory>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/threading/thread.h"
-#include "base/time/time.h"
-#include "media/midi/midi_manager.h"
-#include "media/midi/midi_service.mojom.h"
-
-namespace midi {
-
-class MidiService;
-
-class MidiServiceWinDelegate {
- public:
-  virtual ~MidiServiceWinDelegate() {}
-  virtual void OnCompleteInitialization(mojom::Result result) = 0;
-  virtual void OnAddInputPort(MidiPortInfo info) = 0;
-  virtual void OnAddOutputPort(MidiPortInfo info) = 0;
-  virtual void OnSetInputPortState(uint32_t port_index,
-                                   mojom::PortState state) = 0;
-  virtual void OnSetOutputPortState(uint32_t port_index,
-                                    mojom::PortState state) = 0;
-  virtual void OnReceiveMidiData(uint32_t port_index,
-                                 const std::vector<uint8_t>& data,
-                                 base::TimeTicks time) = 0;
-};
-
-class MidiServiceWin {
- public:
-  virtual ~MidiServiceWin() {}
-  // This method may return before the initialization is completed.
-  virtual void InitializeAsync(MidiServiceWinDelegate* delegate) = 0;
-  // This method may return before the specified data is actually sent.
-  virtual void SendMidiDataAsync(uint32_t port_number,
-                                 const std::vector<uint8_t>& data,
-                                 base::TimeTicks time) = 0;
-};
-
-class MidiManagerWin final : public MidiManager, public MidiServiceWinDelegate {
- public:
-  explicit MidiManagerWin(MidiService* service);
-  ~MidiManagerWin() override;
-
-  // MidiManager overrides:
-  void StartInitialization() final;
-  void Finalize() final;
-  void DispatchSendMidiData(MidiManagerClient* client,
-                            uint32_t port_index,
-                            const std::vector<uint8_t>& data,
-                            double timestamp) final;
-
-  // MidiServiceWinDelegate overrides:
-  void OnCompleteInitialization(mojom::Result result) final;
-  void OnAddInputPort(MidiPortInfo info) final;
-  void OnAddOutputPort(MidiPortInfo info) final;
-  void OnSetInputPortState(uint32_t port_index, mojom::PortState state) final;
-  void OnSetOutputPortState(uint32_t port_index, mojom::PortState state) final;
-  void OnReceiveMidiData(uint32_t port_index,
-                         const std::vector<uint8_t>& data,
-                         base::TimeTicks time) final;
-
- private:
-  std::unique_ptr<MidiServiceWin> midi_service_;
-  DISALLOW_COPY_AND_ASSIGN(MidiManagerWin);
-};
-
-}  // namespace midi
-
-#endif  // MEDIA_MIDI_MIDI_MANAGER_WIN_H_