Convert HidDeviceInfo from a struct to a refcounted class.

extensions/browser/api/hid/hid_device_manager.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 EXTENSIONS_BROWSER_API_HID_HID_DEVICE_MANAGER_H_
 #define EXTENSIONS_BROWSER_API_HID_HID_DEVICE_MANAGER_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 37 matching lines @@
   }
 
   // Enumerates available devices, taking into account the permissions held by
   // the given extension and the filters provided. The provided callback will
   // be posted to the calling thread's task runner with a list of device info
   // objects.
   void GetApiDevices(const Extension* extension,
                      const std::vector<device::HidDeviceFilter>& filters,
                      const GetApiDevicesCallback& callback);
 
-  bool GetDeviceInfo(int resource_id, device::HidDeviceInfo* device_info);
+  scoped_refptr<device::HidDeviceInfo> GetDeviceInfo(int resource_id);
 
   static bool HasPermission(const Extension* extension,
-                            const device::HidDeviceInfo& device_info);
+                            scoped_refptr<device::HidDeviceInfo> device_info);
 
  private:
   friend class BrowserContextKeyedAPIFactory<HidDeviceManager>;
 
   typedef std::map<int, device::HidDeviceId> ResourceIdToDeviceIdMap;
   typedef std::map<device::HidDeviceId, int> DeviceIdToResourceIdMap;
 
   struct GetApiDevicesParams;
 
   // KeyedService:
   void Shutdown() override;
 
   // BrowserContextKeyedAPI:
   static const char* service_name() { return "HidDeviceManager"; }
   static const bool kServiceHasOwnInstanceInIncognito = true;
   static const bool kServiceIsNULLWhileTesting = true;
 
   // EventRouter::Observer:
   void OnListenerAdded(const EventListenerInfo& details) override;
 
   // HidService::Observer:
-  void OnDeviceAdded(const device::HidDeviceInfo& device_info) override;
-  void OnDeviceRemoved(const device::HidDeviceInfo& device_info) override;
+  void OnDeviceAdded(scoped_refptr<device::HidDeviceInfo> device_info) override;
+  void OnDeviceRemoved(
+      scoped_refptr<device::HidDeviceInfo> device_info) override;
 
   // Wait to perform an initial enumeration and register a HidService::Observer
   // until the first API customer makes a request or registers an event
   // listener.
   void LazyInitialize();
 
   // Builds a list of device info objects representing the currently enumerated
   // devices, taking into account the permissions held by the given extension
   // and the filters provided.
   scoped_ptr<base::ListValue> CreateApiDeviceList(
       const Extension* extension,
       const std::vector<device::HidDeviceFilter>& filters);
-  void OnEnumerationComplete(const std::vector<device::HidDeviceInfo>& devices);
+  void OnEnumerationComplete(
+      const std::vector<scoped_refptr<device::HidDeviceInfo>>& devices);
 
   void DispatchEvent(const std::string& event_name,
                      scoped_ptr<base::ListValue> event_args,
-                     const device::HidDeviceInfo& device_info);
+                     scoped_refptr<device::HidDeviceInfo> device_info);
 
   base::ThreadChecker thread_checker_;
   EventRouter* event_router_;
   bool initialized_;
   ScopedObserver<device::HidService, device::HidService::Observer>
       hid_service_observer_;
   bool enumeration_ready_;
   ScopedVector<GetApiDevicesParams> pending_enumerations_;
   int next_resource_id_;
   ResourceIdToDeviceIdMap device_ids_;
   DeviceIdToResourceIdMap resource_ids_;
   base::WeakPtrFactory<HidDeviceManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HidDeviceManager);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_HID_HID_DEVICE_MANAGER_H_