Open IOHIDDevices on the FILE thread

device/hid/hid_connection_mac.h

 // Copyright (c) 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 <CoreFoundation/CoreFoundation.h>
-#include <IOKit/hid/IOHIDManager.h>
+#include <IOKit/hid/IOHIDDevice.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #include <queue>
 
 #include "base/mac/foundation_util.h"
 #include "base/macros.h"
 #include "device/hid/hid_connection.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace net {
 class IOBuffer;
 }
 
 namespace device {
 
 class HidConnectionMac : public HidConnection {
  public:
   HidConnectionMac(
-      IOHIDDeviceRef device,
+      base::ScopedCFTypeRef<IOHIDDeviceRef> device,
       scoped_refptr<HidDeviceInfo> device_info,
       scoped_refptr<base::SingleThreadTaskRunner> file_task_runner);
 
  private:
   ~HidConnectionMac() override;
 
   // HidConnection implementation.
   void PlatformClose() override;
   void PlatformRead(const ReadCallback& callback) override;
   void PlatformWrite(scoped_refptr<net::IOBuffer> buffer,
@@ skipping 28 matching lines @@
 
   std::queue<PendingHidReport> pending_reports_;
   std::queue<PendingHidRead> pending_reads_;
 
   DISALLOW_COPY_AND_ASSIGN(HidConnectionMac);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_HID_HID_CONNECTION_MAC_H_