Added BDiskDeviceList as friend.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2764 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/storage/DiskDevice.h

@@ -7,7 +7,6 @@
 #define _DISK_DEVICE_H
 
 #include <DiskDeviceVisitor.h>
-#include <Messenger.h>
 #include <ObjectList.h>
 
 class BPartition;
@@ -64,6 +63,7 @@ private:
 	bool _AddSession(BSession *session);
 
 private:
+	friend class BDiskDeviceList;
 	friend class BDiskDeviceRoster;
 
 	BObjectList<BSession>	fSessions;

headers/private/storage/Partition.h

@@ -79,6 +79,7 @@ private:
 	void _SetSession(BSession *session);
 
 private:
+	friend class BDiskDeviceList;
 	friend class BSession;
 
 	BSession				*fSession;

headers/private/storage/Session.h

@@ -71,6 +71,7 @@ private:
 
 private:
 	friend class BDiskDevice;
+	friend class BDiskDeviceList;
 
 	BDiskDevice				*fDevice;
 	BObjectList<BPartition>	fPartitions;