FileWrapper[Impl] modifications and actually remove the "Impl" class.

webrtc/system_wrappers/source/file_impl.h

-/*
- *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef WEBRTC_SYSTEM_WRAPPERS_SOURCE_FILE_IMPL_H_
-#define WEBRTC_SYSTEM_WRAPPERS_SOURCE_FILE_IMPL_H_
-
-#include <stdio.h>
-
-#include <memory>
-
-#include "webrtc/system_wrappers/include/file_wrapper.h"
-
-namespace webrtc {
-
-class RWLockWrapper;
-
-class FileWrapperImpl : public FileWrapper {
- public:
-  FileWrapperImpl();
-  ~FileWrapperImpl() override;
-
-  int FileName(char* file_name_utf8, size_t size) const override;
-
-  bool Open() const override;
-
-  int OpenFile(const char* file_name_utf8,
-               bool read_only,
-               bool loop = false,
-               bool text = false) override;
-
-  int OpenFromFileHandle(FILE* handle,
-                         bool manage_file,
-                         bool read_only,
-                         bool loop = false) override;
-
-  int CloseFile() override;
-  int SetMaxFileSize(size_t bytes) override;
-  int Flush() override;
-
-  int Read(void* buf, size_t length) override;
-  bool Write(const void* buf, size_t length) override;
-  int WriteText(const char* format, ...) override;
-  int Rewind() override;
-
- private:
-  int CloseFileImpl();
-  int FlushImpl();
-
-  std::unique_ptr<RWLockWrapper> rw_lock_;
-
-  FILE* id_;
-  bool managed_file_handle_;
-  bool open_;
-  bool looping_;
-  bool read_only_;
-  size_t max_size_in_bytes_;  // -1 indicates file size limitation is off
-  size_t size_in_bytes_;
-  char file_name_utf8_[kMaxFileNameSize];
-};
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_SYSTEM_WRAPPERS_SOURCE_FILE_IMPL_H_