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

chrome/browser/extensions/api/image_writer_private/operation.h

 // Copyright 2013 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_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_OPERATION_H_
 #define CHROME_BROWSER_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_OPERATION_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
@@ skipping 199 matching lines @@
   image_writer_api::Stage stage_;
   int progress_;
 
   // MD5 contexts don't play well with smart pointers.  Just going to allocate
   // memory here.  This requires that we only do one MD5 sum at a time.
   base::MD5Context md5_context_;
 
   // Zip reader for unzip operations. The reason for using a pointer is that we
   // don't want to include zip_reader.h here which can mangle definitions in
   // jni.h when included in the same file. See crbug.com/554199.
-  scoped_ptr<zip::ZipReader> zip_reader_;
+  std::unique_ptr<zip::ZipReader> zip_reader_;
 
   // CleanUp operations that must be run.  All these functions are run on the
   // FILE thread.
   std::vector<base::Closure> cleanup_functions_;
 };
 
 }  // namespace image_writer
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_OPERATION_H_