Create a new print backend for the updated CUPS 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;
+};
+
+}  // namespace printing
+
+#endif  // PRINTING_BACKEND_CUPS_DELETERS_H_