Remove no-op ShowFileDialog(s).

fpdfsdk/include/fsdk_mgr.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_MGR_H_
 #define FPDFSDK_INCLUDE_FSDK_MGR_H_
 
 #include <map>
@@ skipping 350 matching lines @@
 
       CFX_ByteString bsEncode = CFX_WideString(wsEncode).UTF16LE_Encode();
       FPDF_WIDESTRING encode =
           (FPDF_WIDESTRING)bsEncode.GetBuffer(bsEncode.GetLength());
 
       return m_pInfo->FFI_PutRequestURL(m_pInfo, URL, data, encode);
     }
     return FALSE;
   }
 
-  FPDF_BOOL FFI_ShowFileDialog(const FX_WCHAR* wsTitle,
-                               const FX_WCHAR* wsFilter,
-                               std::vector<CFX_WideString>& wsPathArr,
-                               FX_BOOL bOpen) {
-    return FALSE;
-  }
-
   CFX_WideString FFI_GetLanguage() {
     if (m_pInfo && m_pInfo->FFI_GetLanguage) {
       int nRequiredLen = m_pInfo->FFI_GetLanguage(m_pInfo, NULL, 0);
       if (nRequiredLen <= 0)
         return L"";
 
       char* pbuff = new char[nRequiredLen];
       memset(pbuff, 0, nRequiredLen);
       int nActualLen = m_pInfo->FFI_GetLanguage(m_pInfo, pbuff, nRequiredLen);
       if (nActualLen <= 0 || nActualLen > nRequiredLen) {
@@ skipping 259 matching lines @@
   FX_BOOL m_bTakeOverPage;
 #endif  // PDF_ENABLE_XFA
   FX_BOOL m_bEnterWidget;
   FX_BOOL m_bExitWidget;
   FX_BOOL m_bOnWidget;
   FX_BOOL m_bValid;
   FX_BOOL m_bLocked;
 };
 
 #endif  // FPDFSDK_INCLUDE_FSDK_MGR_H_