Print directly to CUPS using the IPP APIs

printing/backend/cups_deleters.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PRINTING_BACKEND_CUPS_DELETERS_H_
 #define PRINTING_BACKEND_CUPS_DELETERS_H_
 
 #include <cups/cups.h>
 
 namespace printing {
 
 struct HttpDeleter {
  public:
   void operator()(http_t* http) const;
 };
 
 struct DestinationDeleter {
  public:
   void operator()(cups_dest_t* dest) const;
 };
 
 struct DestInfoDeleter {
  public:
   void operator()(cups_dinfo_t* info) const;
 };
 
+struct OptionDeleter {
+ public:
+  void operator()(cups_option_t* option) const;
+};
+
 }  // namespace printing
 
 #endif  // PRINTING_BACKEND_CUPS_DELETERS_H_