Several pure virtual IFWL_Adapter* classes not implemented.

xfa/include/fwl/adapter/fwl_adaptercursormgr.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 _FWL_ADAPTER_CURSORMGR_H
-#define _FWL_ADAPTER_CURSORMGR_H
-class CFX_DIBitmap;
-class IFWL_AdapterCursorMgr;
-enum FWL_CURSORTYPE {
-  FWL_CURSORTYPE_Arrow = 0,
-  FWL_CURSORTYPE_Cross,
-  FWL_CURSORTYPE_Hand,
-  FWL_CURSORTYPE_InputBeam,
-  FWL_CURSORTYPE_Wait,
-  FWL_CURSORTYPE_SizeAll,
-  FWL_CURSORTYPE_SizeNWSE,
-  FWL_CURSORTYPE_SizeNESW,
-  FWL_CURSORTYPE_SizeWE,
-  FWL_CURSORTYPE_SizeNS,
-  FWL_CURSORTYPE_Prohibition,
-  FWL_CURSORTYPE_Help
-};
-typedef struct _FWL_HCURSOR { void* pData; } * FWL_HCURSOR;
-
-class IFWL_AdapterCursorMgr {
- public:
-  virtual ~IFWL_AdapterCursorMgr() {}
-  virtual FWL_HCURSOR GetSystemCursor(FWL_CURSORTYPE eCursorType) = 0;
-  virtual FWL_HCURSOR GetCustomCursor(const CFX_DIBitmap* pBitmap,
-                                      FX_FLOAT xHotspot = 0,
-                                      FX_FLOAT yHotspot = 0) = 0;
-  virtual FWL_ERR SetCursor(FWL_HCURSOR hCursor) = 0;
-  virtual FWL_ERR ShowCursor(FX_BOOL bShow) = 0;
-  virtual FWL_ERR GetCursorPos(CFX_PointF& pt) = 0;
-};
-#endif