dbus: Remove dbus::FileDescriptor

dbus/file_descriptor.h

Index: dbus/file_descriptor.h
diff --git a/dbus/file_descriptor.h b/dbus/file_descriptor.h
deleted file mode 100644
index f8e86777eafa870c75ec62d5df51f03ea753023e..0000000000000000000000000000000000000000
--- a/dbus/file_descriptor.h
+++ /dev/null
@@ -1,92 +0,0 @@
-// Copyright (c) 2012 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 DBUS_FILE_DESCRIPTOR_H_
-#define DBUS_FILE_DESCRIPTOR_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "dbus/dbus_export.h"
-
-namespace dbus {
-
-// FileDescriptor is a type used to encapsulate D-Bus file descriptors
-// and to follow the RAII idiom appropiate for use with message operations
-// where the descriptor might be easily leaked.  To guard against this the
-// descriptor is closed when an instance is destroyed if it is owned.
-// Ownership is asserted only when PutValue is used and TakeValue can be
-// used to take ownership.
-//
-// For example, in the following
-//  FileDescriptor fd;
-//  if (!reader->PopString(&name) ||
-//      !reader->PopFileDescriptor(&fd) ||
-//      !reader->PopUint32(&flags)) {
-// the descriptor in fd will be closed if the PopUint32 fails.  But
-//   writer.AppendFileDescriptor(dbus::FileDescriptor(1));
-// will not automatically close "1" because it is not owned.
-//
-// Descriptors must be validated before marshalling in a D-Bus message
-// or using them after unmarshalling.  We disallow descriptors to a
-// directory to reduce the security risks.  Splitting out validation
-// also allows the caller to do this work on the File thread to conform
-// with i/o restrictions.
-class CHROME_DBUS_EXPORT FileDescriptor {
- public:
-  // This provides a simple way to pass around file descriptors since they must
-  // be closed on a thread that is allowed to perform I/O.
-  struct Deleter {
-    void CHROME_DBUS_EXPORT operator()(FileDescriptor* fd);
-  };
-
-  // Permits initialization without a value for passing to
-  // dbus::MessageReader::PopFileDescriptor to fill in and from int values.
-  FileDescriptor() : value_(-1), owner_(false), valid_(false) {}
-  explicit FileDescriptor(int value) : value_(value), owner_(false),
-      valid_(false) {}
-
-  FileDescriptor(FileDescriptor&& other);
-
-  virtual ~FileDescriptor();
-
-  FileDescriptor& operator=(FileDescriptor&& other);
-
-  // Retrieves value as an int without affecting ownership.
-  int value() const;
-
-  // Retrieves whether or not the descriptor is ok to send/receive.
-  int is_valid() const { return valid_; }
-
-  // Sets the value and assign ownership.
-  void PutValue(int value) {
-    value_ = value;
-    owner_ = true;
-    valid_ = false;
-  }
-
-  // Takes the value and ownership.
-  int TakeValue();
-
-  // Checks (and records) validity of the file descriptor.
-  // We disallow directories to avoid potential sandbox escapes.
-  // Note this call must be made on a thread where file i/o is allowed.
-  void CheckValidity();
-
- private:
-  void Swap(FileDescriptor* other);
-
-  int value_;
-  bool owner_;
-  bool valid_;
-
-  DISALLOW_COPY_AND_ASSIGN(FileDescriptor);
-};
-
-using ScopedFileDescriptor =
-    std::unique_ptr<FileDescriptor, FileDescriptor::Deleter>;
-
-}  // namespace dbus
-
-#endif  // DBUS_FILE_DESCRIPTOR_H_