diff -r 000000000000 -r c9bc50fca66e usbmgmt/usbmgr/host/fdf/production/fdcbase/public/fdcplugin.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbmgmt/usbmgr/host/fdf/production/fdcbase/public/fdcplugin.h	Tue Feb 02 02:02:59 2010 +0200
@@ -0,0 +1,95 @@
+/*
+* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+/**
+ @file
+ @publishedPartner
+ @released
+*/
+
+#ifndef FDCPLUGIN_H
+#define FDCPLUGIN_H
+
+#include <e32base.h>
+
+class MFdcPluginObserver;
+
+/**
+Base class for FDC plugins.
+*/
+class CFdcPlugin : public CBase
+	{
+	// So we can make most of this class private- validly callable only by 
+	// CFdcProxy.
+	friend class CFdcProxy;
+
+private: // used by FDF to create and destroy FDC instances
+	/** 
+	Constructor.
+	@param aImplementationUid UID of implementation to create.
+	@param aObserver Handle back onto the FDF for the FDC to use.
+	@return Ownership of a new FDC plugin.
+	*/
+	IMPORT_C static CFdcPlugin* NewL(TUid aImplementationUid, MFdcPluginObserver& aObserver);
+
+	/**
+	Called by FDF to get a pointer to an object which implements the 
+	FDF API with UID aUid. This is a mechanism for allowing future change 
+	to the FDF API without breaking BC in existing (non-updated) FDF 
+	plugins.
+	*/
+	virtual TAny* GetInterface(TUid aUid) = 0;
+
+protected: // called by concrete FDF plugins
+	/** 
+	Constructor
+	*/
+	IMPORT_C CFdcPlugin(MFdcPluginObserver& aObserver);
+
+	/** Destructor. */
+	IMPORT_C ~CFdcPlugin();
+
+	/** 
+	Accessor for the interface to the FDF. 
+	@return Interface to the FDF.
+	*/
+	IMPORT_C MFdcPluginObserver& Observer();
+
+	/**
+	From CBase.
+	*/
+	IMPORT_C TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);
+
+private: // owned
+	/**
+	UID set by ECOM when the instance is created. Used when the instance is 
+	destroyed.
+	*/
+	TUid iInstanceId;
+
+	/**
+	Interface for calls up to the FDF.
+	*/
+	MFdcPluginObserver& iObserver;
+
+	/** 
+	Pad for BC-friendly future change.
+	*/
+	TAny* iPad;
+	};
+
+#endif // FDCPLUGIN_H