Clean up HID backend and API.

chrome/browser/extensions/api/hid/hid_device_resource.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 CHROME_BROWSER_EXTENSIONS_API_HID_HID_DEVICE_RESOURCE_H_
-#define CHROME_BROWSER_EXTENSIONS_API_HID_HID_DEVICE_RESOURCE_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/lazy_instance.h"
-#include "base/memory/ref_counted.h"
-#include "chrome/browser/extensions/api/api_resource.h"
-#include "chrome/browser/extensions/api/api_resource_manager.h"
-#include "content/public/browser/browser_thread.h"
-#include "device/hid/hid_connection.h"
-#include "device/hid/hid_device_info.h"
-
-namespace net {
-class IOBuffer;
-}  // namespace net
-
-namespace extensions {
-
-class HidConnectionResource : public ApiResource {
- public:
-  HidConnectionResource(const std::string& owner_extension_id,
-                    scoped_refptr<device::HidConnection> connection);
-
-  virtual ~HidConnectionResource();
-
-  scoped_refptr<device::HidConnection> connection() {
-    return connection_;
-  }
-
- private:
-  friend class ApiResourceManager<HidConnectionResource>;
-  static const char* service_name() {
-    return "HidDeviceResourceManager";
-  }
-
-
-  static const content::BrowserThread::ID kThreadId =
-      content::BrowserThread::FILE;
-
-  scoped_refptr<device::HidConnection> connection_;
-
-  DISALLOW_COPY_AND_ASSIGN(HidConnectionResource);
-};
-
-}  // namespace extensions
-
-#endif  // CHROME_BROWSER_EXTENSIONS_API_HID_HID_DEVICE_RESOURCE_H_