Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/file_system_provider/fileapi/file_stream_writer.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/chromeos/file_system_provider/fileapi/file_stream_writer.h"
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 114 matching lines @@
       base::File::Error result) {
     DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
     abort_callback_ = AbortCallback();
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE, base::Bind(callback, result));
   }
 
   AbortCallback abort_callback_;
   base::WeakPtr<ProvidedFileSystemInterface> file_system_;
-  scoped_ptr<ScopedFileOpener> file_opener_;
+  std::unique_ptr<ScopedFileOpener> file_opener_;
   int file_handle_;
 
   DISALLOW_COPY_AND_ASSIGN(OperationRunner);
 };
 
 FileStreamWriter::FileStreamWriter(const storage::FileSystemURL& url,
                                    int64_t initial_offset)
     : url_(url),
       current_offset_(initial_offset),
       runner_(new OperationRunner),
@@ skipping 189 matching lines @@
                  current_offset_,
                  buffer_length,
                  base::Bind(&FileStreamWriter::OnWriteFileCompleted,
                             weak_ptr_factory_.GetWeakPtr(),
                             buffer_length,
                             callback)));
 }
 
 }  // namespace file_system_provider
 }  // namespace chromeos