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

chrome/browser/chromeos/file_system_provider/scoped_file_opener.h

 // Copyright 2015 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 CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SCOPED_FILE_OPENER_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SCOPED_FILE_OPENER_H_
 
+#include <memory>
+
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_interface.h"
 
 namespace base {
 class FilePath;
 }  // namespace base
 
 namespace chromeos {
 namespace file_system_provider {
 
 // Opens files and guarantees that they will be closed when the object gets out
@@ skipping 11 matching lines @@
 
  private:
   class Runner;
   scoped_refptr<Runner> runner_;
 };
 
 }  // namespace file_system_provider
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SCOPED_FILE_OPENER_H_