Move TransientDeviceId from MediFileSystemRegistry to RemovableStorageNotifications.

chrome/browser/system_monitor/transient_device_ids.cc

 // Copyright (c) 2012 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.
 
 // TransientDeviceIds implementation.
 
-#include "chrome/browser/media_gallery/transient_device_ids.h"
+#include "chrome/browser/system_monitor/transient_device_ids.h"
 
 #include "base/logging.h"
 #include "chrome/browser/system_monitor/media_storage_util.h"
 
 namespace chrome {
 
 TransientDeviceIds::TransientDeviceIds() : next_transient_id_(1) {}
 
 TransientDeviceIds::~TransientDeviceIds() {}
 
 uint64 TransientDeviceIds::GetTransientIdForDeviceId(
     const std::string& device_id) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(MediaStorageUtil::IsRemovableDevice(device_id));
 
   bool inserted =
       id_map_.insert(std::make_pair(device_id, next_transient_id_)).second;
   if (inserted) {
     // Inserted a device that has never been seen before.
     ++next_transient_id_;
   }
   return id_map_[device_id];
 }
 
 }  // namespace chrome