Manage HidService lifetime in DeviceClient implementations.

device/hid/hid_service_win.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_SERVICE_WIN_H_
 #define DEVICE_HID_HID_SERVICE_WIN_H_
 
 #include <windows.h>
 #include <hidclass.h>
 
@@ skipping 14 matching lines @@
 namespace win {
 class MessageWindow;
 }
 }
 
 namespace device {
 
 class HidServiceWin : public HidService, public DeviceMonitorWin::Observer {
  public:
   HidServiceWin(scoped_refptr<base::SingleThreadTaskRunner> file_task_runner);
+  ~HidServiceWin() override;
 
   void Connect(const HidDeviceId& device_id,
                const ConnectCallback& callback) override;
 
  private:
-  ~HidServiceWin() override;
-
   static void EnumerateOnFileThread(
       base::WeakPtr<HidServiceWin> service,
       scoped_refptr<base::SingleThreadTaskRunner> task_runner);
   static void CollectInfoFromButtonCaps(PHIDP_PREPARSED_DATA preparsed_data,
                                         HIDP_REPORT_TYPE report_type,
                                         USHORT button_caps_length,
                                         HidCollectionInfo* collection_info);
   static void CollectInfoFromValueCaps(PHIDP_PREPARSED_DATA preparsed_data,
                                        HIDP_REPORT_TYPE report_type,
                                        USHORT value_caps_length,
@@ skipping 16 matching lines @@
   scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_;
   ScopedObserver<DeviceMonitorWin, DeviceMonitorWin::Observer> device_observer_;
   base::WeakPtrFactory<HidServiceWin> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HidServiceWin);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_HID_HID_SERVICE_WIN_H_