Pepper: Remove file_utils from trusted plugin.

ppapi/native_client/src/trusted/plugin/file_utils.h

-// Copyright (c) 2013 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.
-
-// Some common file utilities for plugin code.
-
-#ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_FILE_UTILS_H_
-#define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_FILE_UTILS_H_
-
-#include "native_client/src/include/nacl_string.h"
-#include "native_client/src/include/portability_io.h"
-#include "ppapi/c/pp_stdint.h"
-
-namespace plugin {
-namespace file_utils {
-
-enum StatusCode {
-  PLUGIN_FILE_SUCCESS = 0,
-  PLUGIN_FILE_ERROR_MEM_ALLOC = 1,
-  PLUGIN_FILE_ERROR_OPEN = 2,
-  PLUGIN_FILE_ERROR_FILE_TOO_LARGE = 3,
-  PLUGIN_FILE_ERROR_STAT = 4,
-  PLUGIN_FILE_ERROR_READ = 5
-};
-
-// Slurp the whole contents of the given file (|fd| - open file descriptor) into
-// |out_buf|. |max_size_to_read| is the maximal allowed size of the file.
-// If the file turns out to be larger, an error is returned. In any case,
-// |fd| is closed.
-StatusCode SlurpFile(int32_t fd,
-                     nacl::string& out_buf,
-                     size_t max_size_to_read = (1 << 20));
-
-}  // namespace file_utils
-}  // namespace plugin
-
-#endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_FILE_UTILS_H_
-