Banish CFX_ByteStringArray and CFX_WideStringArray to the XFA side.

core/include/fpdfdoc/fpdf_doc.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 CORE_INCLUDE_FPDFDOC_FPDF_DOC_H_
 #define CORE_INCLUDE_FPDFDOC_FPDF_DOC_H_
 
 #include <map>
@@ skipping 545 matching lines @@
                             CFX_WideString& csNewFieldName);
 
   FX_BOOL ValidateFieldName(const CPDF_FormControl* pControl,
                             CFX_WideString& csNewFieldName);
 
   FX_DWORD CountFields(const CFX_WideString& csFieldName = L"");
 
   CPDF_FormField* GetField(FX_DWORD index,
                            const CFX_WideString& csFieldName = L"");
 
-  void GetAllFieldNames(CFX_WideStringArray& allFieldNames);
+  void GetAllFieldNames(std::vector<CFX_WideString>& allFieldNames);
 
   CPDF_FormField* GetFieldByDict(CPDF_Dictionary* pFieldDict) const;
 
   CPDF_FormControl* GetControlAtPoint(CPDF_Page* pPage,
                                       FX_FLOAT pdf_x,
                                       FX_FLOAT pdf_y,
                                       int* z_order) const;
 
   CPDF_FormControl* GetControlByDict(const CPDF_Dictionary* pWidgetDict) const;
 
@@ skipping 552 matching lines @@
   CFX_WideString GetCaption(const CFX_ByteStringC& csEntry) const;
 
   CPDF_Stream* GetIcon(const CFX_ByteStringC& csEntry) const;
 
   CPDF_Dictionary* const m_pDict;
 };
 
 CFX_WideString FILESPEC_EncodeFileName(const CFX_WideStringC& filepath);
 
 #endif  // CORE_INCLUDE_FPDFDOC_FPDF_DOC_H_