Revert 92302 - First pass at revving stable pepper interfaces to 1.0.

ppapi/c/ppb_file_io.h

 /* Copyright (c) 2011 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 PPAPI_C_PPB_FILE_IO_H_
 #define PPAPI_C_PPB_FILE_IO_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_macros.h"
@@ skipping 46 matching lines @@
    * file already exists, then the FileIO::Open() call will fail.
    */
   PP_FILEOPENFLAG_EXCLUSIVE = 1 << 4
 } PP_FileOpenFlags;
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_FileOpenFlags, 4);
 /**
  * @}
  */
 
 #define PPB_FILEIO_INTERFACE_0_5 "PPB_FileIO;0.5"
-#define PPB_FILEIO_INTERFACE_1_0 "PPB_FileIO;1.0"
-#define PPB_FILEIO_INTERFACE PPB_FILEIO_INTERFACE_1_0
+#define PPB_FILEIO_INTERFACE PPB_FILEIO_INTERFACE_0_5
 
 /**
  * @addtogroup Interfaces
  * @{
  */
 /**
  * The <code>PPB_FileIO</code> struct is used to operate on a regular file
  * (PP_FileType_Regular).
  */
 struct PPB_FileIO {
@@ skipping 167 matching lines @@
    * FileIO.
    */
   void (*Close)(PP_Resource file_io);
 };
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PPB_FILE_IO_H_ */