Banish CFX_ByteStringArray and CFX_WideStringArray to the XFA side.

fpdfsdk/include/fpdfxfa/fpdfxfa_doc.h

Index: fpdfsdk/include/fpdfxfa/fpdfxfa_doc.h
diff --git a/fpdfsdk/include/fpdfxfa/fpdfxfa_doc.h b/fpdfsdk/include/fpdfxfa/fpdfxfa_doc.h
index 64b38756298d9b51663020d44917b90346dd2884..eb064d2682b02fd64d2ec910f34b7ee6433d1b5b 100644
--- a/fpdfsdk/include/fpdfxfa/fpdfxfa_doc.h
+++ b/fpdfsdk/include/fpdfxfa/fpdfxfa_doc.h
@@ -7,6 +7,8 @@
 #ifndef FPDFXFA_DOC_H_
 #define FPDFXFA_DOC_H_
 
+#include <vector>
+
 #include "public/fpdfview.h"
 #include "xfa/include/fxfa/fxfa.h"
 
@@ -161,7 +163,7 @@ class CPDFXFA_Document : public IXFA_DocProvider {
   }
   virtual FX_BOOL GetSuggestWords(IXFA_Doc* hDoc,
                                   const CFX_ByteStringC& sWord,
-                                  CFX_ByteStringArray& sSuggest) {
+                                  std::vector<CFX_ByteString>& sSuggest) {
     return FALSE;
   }