Add RequestOSFileHandle as a private PPAPI

ppapi/c/trusted/ppb_file_io_trusted.h

 /* Copyright (c) 2012 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.
  */
 
-/* From trusted/ppb_file_io_trusted.idl modified Wed Oct  5 14:06:02 2011. */
+/* From trusted/ppb_file_io_trusted.idl modified Tue Mar 26 20:38:45 2013. */
 
 #ifndef PPAPI_C_TRUSTED_PPB_FILE_IO_TRUSTED_H_
 #define PPAPI_C_TRUSTED_PPB_FILE_IO_TRUSTED_H_
 
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_stdint.h"
 
 #define PPB_FILEIOTRUSTED_INTERFACE_0_4 "PPB_FileIOTrusted;0.4"
@@ skipping 11 matching lines @@
  * @{
  */
 /* Available only to trusted implementations. */
 struct PPB_FileIOTrusted_0_4 {
   /**
    * Returns a file descriptor corresponding to the given FileIO object. On
    * Windows, returns a HANDLE; on all other platforms, returns a POSIX file
    * descriptor. The FileIO object must have been opened with a successful
    * call to FileIO::Open.  The file descriptor will be closed automatically
    * when the FileIO object is closed or destroyed.
+   *
+   * TODO(hamaji): Remove this and use GetOSFileHandle instead.
    */
   int32_t (*GetOSFileDescriptor)(PP_Resource file_io);
   /**
    * Notifies the browser that underlying file will be modified.  This gives
    * the browser the opportunity to apply quota restrictions and possibly
    * return an error to indicate that the write is not allowed.
    */
   int32_t (*WillWrite)(PP_Resource file_io,
                        int64_t offset,
                        int32_t bytes_to_write,
@@ skipping 14 matching lines @@
                            struct PP_CompletionCallback callback);
 };
 
 typedef struct PPB_FileIOTrusted_0_4 PPB_FileIOTrusted;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_TRUSTED_PPB_FILE_IO_TRUSTED_H_ */