Convert //dbus from scoped_ptr to std::unique_ptr

dbus/file_descriptor.h

 // 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 "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "base/move.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
@@ skipping 58 matching lines @@
 
  private:
   void Swap(FileDescriptor* other);
 
   int value_;
   bool owner_;
   bool valid_;
 };
 
 using ScopedFileDescriptor =
-    scoped_ptr<FileDescriptor, FileDescriptor::Deleter>;
+    std::unique_ptr<FileDescriptor, FileDescriptor::Deleter>;
 
 }  // namespace dbus
 
 #endif  // DBUS_FILE_DESCRIPTOR_H_