Move TransientDeviceId from MediFileSystemRegistry to RemovableStorageNotifications.

chrome/browser/system_monitor/removable_storage_notifications.h

Index: chrome/browser/system_monitor/removable_storage_notifications.h
diff --git a/chrome/browser/system_monitor/removable_storage_notifications.h b/chrome/browser/system_monitor/removable_storage_notifications.h
index e916dea83fdc0ed3f1fadb65729e269f983a5234..732f3f0b121129648153e5a0aa471a8e23a637ce 100644
--- a/chrome/browser/system_monitor/removable_storage_notifications.h
+++ b/chrome/browser/system_monitor/removable_storage_notifications.h
@@ -18,6 +18,7 @@ namespace chrome {
 
 class MediaFileSystemRegistryTest;
 class RemovableStorageObserver;
+class TransientDeviceIds;
 
 // Base class for platform-specific instances watching for removable storage
 // attachments/detachments.
@@ -83,6 +84,8 @@ class RemovableStorageNotifications {
   void AddObserver(RemovableStorageObserver* obs);
   void RemoveObserver(RemovableStorageObserver* obs);
 
+  TransientDeviceIds* transient_device_ids() const;
+
  protected:
   RemovableStorageNotifications();
   virtual ~RemovableStorageNotifications();
@@ -114,6 +117,8 @@ class RemovableStorageNotifications {
 
   // Map of all the attached removable storage devices.
   RemovableStorageMap storage_map_;
+
+  scoped_ptr<TransientDeviceIds> transient_device_ids_;
 };
 
 } // namespace chrome