Re-enable MSVC warning 4800 for compiling with chromium_code

fpdfsdk/src/fpdfsave.cpp

 // 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
 
 #include "public/fpdf_save.h"
 
 #include <vector>
 
@@ skipping 284 matching lines @@
 
   CPDF_Creator FileMaker(pPDFDoc);
   if (bSetVersion)
     FileMaker.SetFileVersion(fileVerion);
   if (flags == FPDF_REMOVE_SECURITY) {
     flags = 0;
     FileMaker.RemoveSecurity();
   }
 
   CFX_IFileWrite* pStreamWrite = NULL;
-  FX_BOOL bRet;
   pStreamWrite = new CFX_IFileWrite;
   pStreamWrite->Init(pFileWrite);
-  bRet = FileMaker.Create(pStreamWrite, flags);
+  bool bRet = FileMaker.Create(pStreamWrite, flags);
 #ifdef PDF_ENABLE_XFA
   SendPostSaveToXFADoc(pDoc);
 #endif  // PDF_ENABLE_XFA
   pStreamWrite->Release();
   return bRet;
 }
 
 }  // namespace
 
 DLLEXPORT FPDF_BOOL STDCALL FPDF_SaveAsCopy(FPDF_DOCUMENT document,
                                             FPDF_FILEWRITE* pFileWrite,
                                             FPDF_DWORD flags) {
   return FPDF_Doc_Save(document, pFileWrite, flags, FALSE, 0);
 }
 
 DLLEXPORT FPDF_BOOL STDCALL FPDF_SaveWithVersion(FPDF_DOCUMENT document,
                                                  FPDF_FILEWRITE* pFileWrite,
                                                  FPDF_DWORD flags,
                                                  int fileVersion) {
   return FPDF_Doc_Save(document, pFileWrite, flags, TRUE, fileVersion);
 }