Revert 247926 "HID backend"

trunk/src/device/hid/hid_connection_mac.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 DEVICE_HID_HID_CONNECTION_MAC_H_
-#define DEVICE_HID_HID_CONNECTION_MAC_H_
-
-#include "base/callback.h"
-#include "base/memory/ref_counted.h"
-#include "base/tuple.h"
-#include "device/hid/hid_connection.h"
-#include "device/hid/hid_device_info.h"
-#include "device/hid/hid_service_mac.h"
-
-namespace net {
-class IOBuffer;
-}
-
-namespace device {
-
-class HidConnectionMac : public HidConnection {
- public:
-  HidConnectionMac(HidServiceMac* service,
-                   HidDeviceInfo device_info,
-                   IOHIDDeviceRef device);
-
-  virtual void Read(scoped_refptr<net::IOBuffer> buffer,
-                    size_t size,
-                    const IOCallback& callback) OVERRIDE;
-  virtual void Write(scoped_refptr<net::IOBuffer> buffer,
-                     size_t size,
-                     const IOCallback& callback) OVERRIDE;
-  virtual void GetFeatureReport(scoped_refptr<net::IOBuffer> buffer,
-                                size_t size,
-                                const IOCallback& callback) OVERRIDE;
-  virtual void SendFeatureReport(scoped_refptr<net::IOBuffer> buffer,
-                                 size_t size,
-                                 const IOCallback& callback) OVERRIDE;
-
- private:
-  virtual ~HidConnectionMac();
-
-  static void InputReportCallback(void * context,
-                                  IOReturn result,
-                                  void * sender,
-                                  IOHIDReportType type,
-                                  uint32_t reportID,
-                                  uint8_t * report,
-                                  CFIndex reportLength);
-  void ProcessReadQueue();
-  void ProcessInputReport(IOHIDReportType type,
-                          scoped_refptr<net::IOBuffer> report,
-                          CFIndex reportLength);
-
-  void WriteReport(IOHIDReportType type,
-                   scoped_refptr<net::IOBuffer> buffer,
-                   size_t size,
-                   const IOCallback& callback);
-
-  HidServiceMac* service_;
-  scoped_refptr<base::MessageLoopProxy> message_loop_;
-  base::ScopedCFTypeRef<IOHIDDeviceRef> device_;
-  scoped_ptr_malloc<uint8_t> inbound_buffer_;
-  bool disconnected_;
-
-  typedef std::pair<scoped_refptr<net::IOBuffer>, size_t> PendingReport;
-  std::queue<PendingReport> input_reports_;
-  typedef Tuple3<scoped_refptr<net::IOBuffer>, size_t, IOCallback> PendingRead;
-  std::queue<PendingRead> read_queue_;
-
-  DISALLOW_COPY_AND_ASSIGN(HidConnectionMac);
-};
-
-
-}  // namespace device
-
-#endif  // DEVICE_HID_HID_CONNECTION_MAC_H_