Another ugly hack to work around ppapi header changes.

libraries/nacl-mounts/pepper/PepperFileIOJob.h

 /*
  * Copyright (c) 2011 The Native Client 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 PACKAGES_LIBRARIES_NACL_MOUNTS_PEPPER_PEPPERFILEIOJOB_H_
 #define PACKAGES_LIBRARIES_NACL_MOUNTS_PEPPER_PEPPERFILEIOJOB_H_
 
+#include "../util/ppapi_version.h"
 #include <ppapi/c/pp_errors.h>
 #include <ppapi/c/pp_file_info.h>
 #include <ppapi/cpp/completion_callback.h>
 #include <ppapi/cpp/file_io.h>
 #include <ppapi/cpp/file_ref.h>
 #include <ppapi/cpp/file_system.h>
 #include <ppapi/cpp/url_loader.h>
 #include <ppapi/cpp/url_request_info.h>
 #include <ppapi/cpp/url_response_info.h>
+#if ADHOC_PPAPI_VERSION >= 18
+#include <ppapi/utility/completion_callback_factory.h>
+#endif
 #include <string>
 #include <vector>
 #include <set>
 #include "../base/MainThreadRunner.h"
 #include "../util/macros.h"
 #include "PepperDirectoryReader.h"
 
 typedef enum {
   OPEN_FILE_SYSTEM = 0,
   OPEN_FILE,
@@ skipping 53 matching lines @@
   int64_t len_;
   int32_t flags_;
   MainThreadRunner::JobEntry *job_entry_;
 
   void Finish(int32_t result);
 
   DISALLOW_COPY_AND_ASSIGN(PepperFileIOJob);
 };
 
 #endif  // PACKAGES_LIBRARIES_NACL_MOUNTS_PEPPER_PEPPERFILEIOJOB_H_