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

chrome/browser/extensions/api/image_writer_private/destroy_partitions_operation.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 <string.h>
 
 #include "base/files/file_util.h"
 #include "chrome/browser/extensions/api/image_writer_private/destroy_partitions_operation.h"
 #include "chrome/browser/extensions/api/image_writer_private/error_messages.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 13 matching lines @@
     : Operation(manager, extension_id, storage_unit_id) {}
 
 DestroyPartitionsOperation::~DestroyPartitionsOperation() {}
 
 void DestroyPartitionsOperation::StartImpl() {
   if (!base::CreateTemporaryFileInDir(temp_dir_.path(), &image_path_)) {
     Error(error::kTempFileError);
     return;
   }
 
-  scoped_ptr<char[]> buffer(new char[kPartitionTableSize]);
+  std::unique_ptr<char[]> buffer(new char[kPartitionTableSize]);
   memset(buffer.get(), 0, kPartitionTableSize);
 
   if (base::WriteFile(image_path_, buffer.get(), kPartitionTableSize) !=
       kPartitionTableSize) {
     Error(error::kTempFileError);
     return;
   }
 
   content::BrowserThread::PostTask(
       content::BrowserThread::FILE,
       FROM_HERE,
       base::Bind(&DestroyPartitionsOperation::Write,
                  this,
                  base::Bind(&DestroyPartitionsOperation::Finish, this)));
 }
 
 }  // namespace image_writer
 }  // namespace extensions