Revert of Initial version of new file wrapper

webrtc/base/file.h

-/*
- *  Copyright (c) 2016 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_BASE_FILE_H_
-#define WEBRTC_BASE_FILE_H_
-
-#include <stdint.h>
-
-#include <string>
-
-#include "webrtc/base/platform_file.h"
-#include "webrtc/base/constructormagic.h"
-
-namespace rtc {
-
-// This class wraps the platform specific APIs for simple file interactions.
-//
-// The various read and write methods are best effort, i.e. if an underlying
-// call does not manage to read/write all the data more calls will be performed,
-// until an error is detected or all data is read/written.
-class File {
- public:
-  // Wraps the given PlatformFile. This class is then responsible for closing
-  // the file, which will be done in the destructor if Close is never called.
-  explicit File(PlatformFile);
-  ~File();
-
-  File(File&& other);
-  File& operator=(File&& other);
-
-  static File Open(const std::string& path);
-
-  size_t Write(const uint8_t* data, size_t length);
-  size_t Read(uint8_t* buffer, size_t length);
-
-  // The current position in the file after a call to these methods is platform
-  // dependent (MSVC gives position offset+length, most other
-  // compilers/platforms do not alter the position), i.e. do not depend on it,
-  // do a Seek before any subsequent Read/Write.
-  size_t WriteAt(const uint8_t* data, size_t length, size_t offset);
-  size_t ReadAt(uint8_t* buffer, size_t length, size_t offset);
-
-  // Attempt to position the file at the given offset from the start.
-  // Returns true if successful, false otherwise.
-  bool Seek(size_t offset);
-
-  // Attempt to close the file. Returns true if successful, false otherwise,
-  // most notably when the file is already closed.
-  bool Close();
-
-  bool IsOpen();
-
- private:
-  PlatformFile file_;
-  RTC_DISALLOW_COPY_AND_ASSIGN(File);
-};
-
-}  // namespace rtc
-
-#endif  // WEBRTC_BASE_FILE_H_