More FWL interface cleanup.

xfa/fwl/core/fwl_targetimp.h

-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#ifndef XFA_FWL_CORE_FWL_TARGETIMP_H_
-#define XFA_FWL_CORE_FWL_TARGETIMP_H_
-
-#include "core/fxcrt/include/fx_basic.h"
-#include "xfa/fwl/core/ifwl_target.h"
-
-class CFWL_TargetImp {
- public:
-  virtual ~CFWL_TargetImp();
-
-  virtual FWL_ERR GetClassName(CFX_WideString& wsClass) const;
-  virtual uint32_t GetClassID() const;
-  virtual FX_BOOL IsInstance(const CFX_WideStringC& wsClass) const;
-  virtual FWL_ERR Initialize();
-  virtual FWL_ERR Finalize();
-
- protected:
-  CFWL_TargetImp();
-};
-
-#endif  // XFA_FWL_CORE_FWL_TARGETIMP_H_