Fix remaining WeakPtrFactory ordering problems

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 83 matching lines @@
   scoped_ptr<base::ListValue> CreateApiDeviceList(
       const Extension* extension,
       const std::vector<device::HidDeviceFilter>& filters);
   void OnEnumerationComplete(const std::vector<device::HidDeviceInfo>& devices);
 
   void DispatchEvent(const std::string& event_name,
                      scoped_ptr<base::ListValue> event_args,
                      const device::HidDeviceInfo& device_info);
 
   base::ThreadChecker thread_checker_;
-  base::WeakPtrFactory<HidDeviceManager> weak_factory_;
   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_