Clean up the file dev interfaces. The combination of some dev and some non

ppapi/cpp/dev/file_io_dev.h

 // Copyright (c) 2010 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_CPP_DEV_FILE_IO_DEV_H_
 #define PPAPI_CPP_DEV_FILE_IO_DEV_H_
 
-#include "ppapi/c/pp_time.h"
-#include "ppapi/cpp/resource.h"
-
-struct PP_FileInfo_Dev;
+#include "ppapi/cpp/file_io.h"
 
 namespace pp {
 
-class CompletionCallback;
-class FileRef_Dev;
-class Instance;
-
-class FileIO_Dev : public Resource {
- public:
-  // Constructs an is_null resource.
-  FileIO_Dev();
-
-  FileIO_Dev(Instance* instance);
-  FileIO_Dev(const FileIO_Dev& other);
-
-    // PPB_FileIO methods:
-  int32_t Open(const FileRef_Dev& file_ref,
-               int32_t open_flags,
-               const CompletionCallback& cc);
-  int32_t Query(PP_FileInfo_Dev* result_buf,
-                const CompletionCallback& cc);
-  int32_t Touch(PP_Time last_access_time,
-                PP_Time last_modified_time,
-                const CompletionCallback& cc);
-  int32_t Read(int64_t offset,
-               char* buffer,
-               int32_t bytes_to_read,
-               const CompletionCallback& cc);
-  int32_t Write(int64_t offset,
-                const char* buffer,
-                int32_t bytes_to_write,
-                const CompletionCallback& cc);
-  int32_t SetLength(int64_t length,
-                    const CompletionCallback& cc);
-  int32_t Flush(const CompletionCallback& cc);
-  void Close();
-};
+typedef FileIO FileIO_Dev;
 
 }  // namespace pp
 
 #endif  // PPAPI_CPP_DEV_FILE_IO_DEV_H_