Implement FPDF_VIEWERREF_GetName() API.

public/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 PUBLIC_FPDF_DOC_H_
 #define PUBLIC_FPDF_DOC_H_
 
 #include "fpdfview.h"
@@ skipping 253 matching lines @@
 //              CreationDate, or ModDate.
 //            For detailed explanations of these tags and their respective
 //            values, please refer to PDF Reference 1.6, section 10.2.1,
 //            'Document Information Dictionary'.
 //   buffer - a buffer for the title. May be NULL.
 //   buflen - the length of the buffer, in bytes. May be 0.
 //
 // Returns the number of bytes in the title, including trailing zeros.
 //
 // The |buffer| is always encoded in UTF-16LE. The |buffer| is followed by two
-// bytes of zeros indicating the end of the string.  If |buflen| is less then
+// bytes of zeros indicating the end of the string.  If |buflen| is less than
 // the returned length, or |buffer| is NULL, |buffer| will not be modified.
 DLLEXPORT unsigned long STDCALL FPDF_GetMetaText(FPDF_DOCUMENT doc,
                                                  FPDF_BYTESTRING tag,
                                                  void* buffer,
                                                  unsigned long buflen);
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif  // __cplusplus
 
 #endif  // PUBLIC_FPDF_DOC_H_