Remove IXFA_* interfaces.

fpdfsdk/include/fsdk_baseannot.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_INCLUDE_FSDK_BASEANNOT_H_
 #define FPDFSDK_INCLUDE_FSDK_BASEANNOT_H_
 
 #if _FX_OS_ == _FX_ANDROID_
@@ skipping 65 matching lines @@
 #endif  // PDF_ENABLE_XFA
 
   virtual FX_FLOAT GetMinWidth() const;
   virtual FX_FLOAT GetMinHeight() const;
   // define layout order to 5.
   virtual int GetLayoutOrder() const { return 5; }
 
   virtual CPDF_Annot* GetPDFAnnot() const { return nullptr; }
 
 #ifdef PDF_ENABLE_XFA
-  virtual IXFA_Widget* GetXFAWidget() const { return nullptr; }
+  virtual CXFA_FFWidget* GetXFAWidget() const { return nullptr; }
 #endif  // PDF_ENABLE_XFA
 
   virtual CFX_ByteString GetType() const { return ""; }
   virtual CFX_ByteString GetSubType() const { return ""; }
 
   virtual void SetRect(const CFX_FloatRect& rect) {}
   virtual CFX_FloatRect GetRect() const { return CFX_FloatRect(); }
 
   virtual void Annot_OnDraw(CFX_RenderDevice* pDevice,
                             CFX_Matrix* pUser2Device,
@@ skipping 116 matching lines @@
                        const CFX_ByteString& sAPState = "");
 
  protected:
   CPDF_Annot* m_pAnnot;
 
  private:
   FX_BOOL CreateFormFiller();
 };
 
 #endif  // FPDFSDK_INCLUDE_FSDK_BASEANNOT_H_