Remove RichText support from fpdfsdk/fxedit.

fpdfsdk/pdfwindow/PWL_ListBox.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 FPDFSDK_PDFWINDOW_PWL_LISTBOX_H_
 #define FPDFSDK_PDFWINDOW_PWL_LISTBOX_H_
 
 #include "fpdfsdk/fxedit/include/fx_edit.h"
@@ skipping 22 matching lines @@
                          FX_FLOAT fSmallStep,
                          FX_FLOAT fBigStep) override;
   void IOnSetScrollPosX(FX_FLOAT fx) override {}
   void IOnSetScrollPosY(FX_FLOAT fy) override;
   void IOnInvalidateRect(CFX_FloatRect* pRect) override;
 
   void IOnSetCaret(FX_BOOL bVisible,
                    const CFX_FloatPoint& ptHead,
                    const CFX_FloatPoint& ptFoot,
                    const CPVT_WordPlace& place);
-  void IOnCaretChange(const CPVT_SecProps& secProps,
-                      const CPVT_WordProps& wordProps);
 
  private:
   CPWL_ListBox* m_pList;
 };
 
 class CPWL_ListBox : public CPWL_Wnd {
  public:
   CPWL_ListBox();
   ~CPWL_ListBox() override;
 
@@ skipping 58 matching lines @@
   IPWL_Filler_Notify* m_pFillerNotify;
 
  public:
   void AttachFFLData(void* pData) { m_pFormFiller = pData; }
 
  private:
   void* m_pFormFiller;
 };
 
 #endif  // FPDFSDK_PDFWINDOW_PWL_LISTBOX_H_