Remove some IFX_* wrappers.

fpdfsdk/pdfwindow/PWL_ListBox.h

Index: fpdfsdk/pdfwindow/PWL_ListBox.h
diff --git a/fpdfsdk/pdfwindow/PWL_ListBox.h b/fpdfsdk/pdfwindow/PWL_ListBox.h
index eea0862a8be2dc755b2e56270922ac93be74e01e..91ab7f768fed3b29d16a933dcb1108d4739d15f1 100644
--- a/fpdfsdk/pdfwindow/PWL_ListBox.h
+++ b/fpdfsdk/pdfwindow/PWL_ListBox.h
@@ -10,31 +10,27 @@
 #include "fpdfsdk/fxedit/include/fx_edit.h"
 #include "fpdfsdk/pdfwindow/PWL_Wnd.h"
 
+class CFX_ListCtrl;
 class CPWL_List_Notify;
 class CPWL_ListBox;
 class IPWL_Filler_Notify;
+struct CPVT_SecProps;
+struct CPVT_WordPlace;
+struct CPVT_WordProps;
 
-class CPWL_List_Notify : public IFX_List_Notify {
+class CPWL_List_Notify {
  public:
   CPWL_List_Notify(CPWL_ListBox* pList);
-  ~CPWL_List_Notify() override;
+  ~CPWL_List_Notify();
 
-  // IFX_List_Notify
-  void IOnSetScrollInfoX(FX_FLOAT fPlateMin,
-                         FX_FLOAT fPlateMax,
-                         FX_FLOAT fContentMin,
-                         FX_FLOAT fContentMax,
-                         FX_FLOAT fSmallStep,
-                         FX_FLOAT fBigStep) override {}
   void IOnSetScrollInfoY(FX_FLOAT fPlateMin,
                          FX_FLOAT fPlateMax,
                          FX_FLOAT fContentMin,
                          FX_FLOAT fContentMax,
                          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;
+                         FX_FLOAT fBigStep);
+  void IOnSetScrollPosY(FX_FLOAT fy);
+  void IOnInvalidateRect(CFX_FloatRect* pRect);
 
   void IOnSetCaret(FX_BOOL bVisible,
                    const CFX_FloatPoint& ptHead,
@@ -104,8 +100,8 @@ class CPWL_ListBox : public CPWL_Wnd {
   }
 
  protected:
-  IFX_List* m_pList;
-  CPWL_List_Notify* m_pListNotify;
+  std::unique_ptr<CFX_ListCtrl> m_pList;
+  std::unique_ptr<CPWL_List_Notify> m_pListNotify;
   FX_BOOL m_bMouseDown;
   FX_BOOL m_bHoverSel;
   IPWL_Filler_Notify* m_pFillerNotify;