Require explicit selection of traits for LazyInstance

chrome/browser/media_galleries/chromeos/mtp_device_task_helper_map_service.h

 // Copyright 2013 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_MEDIA_GALLERIES_CHROMEOS_MTP_DEVICE_TASK_HELPER_MAP_SERVICE_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_CHROMEOS_MTP_DEVICE_TASK_HELPER_MAP_SERVICE_H_
 
 #include <map>
 #include <string>
 
@@ skipping 20 matching lines @@
                                const bool read_only);
 
   // Gets the MTPDeviceTaskHelper object associated with the device storage.
   // |storage_name| specifies the name of the storage device.
   // Return NULL if the |storage_name| is no longer valid (e.g. because the
   // corresponding storage device is detached, etc).
   MTPDeviceTaskHelper* GetDeviceTaskHelper(const std::string& storage_name,
                                            const bool read_only);
 
  private:
-  friend struct base::DefaultLazyInstanceTraits<MTPDeviceTaskHelperMapService>;
+  friend struct base::LazyInstanceTraitsBase<MTPDeviceTaskHelperMapService>;
 
   // A key to be used in TaskHelperMap.
   typedef std::string MTPDeviceTaskHelperKey;
 
   // Gets a key from |storage_name| and |read_only|.
   static MTPDeviceTaskHelperKey GetMTPDeviceTaskHelperKey(
       const std::string& storage_name,
       const bool read_only);
 
   // Key: A combined value with storage_name and read_only.
   // Value: MTPDeviceTaskHelper object.
   typedef std::map<MTPDeviceTaskHelperKey, MTPDeviceTaskHelper*> TaskHelperMap;
 
   // Get access to this class using GetInstance() method.
   MTPDeviceTaskHelperMapService();
   ~MTPDeviceTaskHelperMapService();
 
   // Mapping of |storage_name| and MTPDeviceTaskHelper*.
   // TaskHelperMap owns MTPDeviceTaskHelper objects.
   TaskHelperMap task_helper_map_;
 
   DISALLOW_COPY_AND_ASSIGN(MTPDeviceTaskHelperMapService);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_CHROMEOS_MTP_DEVICE_TASK_HELPER_MAP_SERVICE_H_