Add RetainedRef uses where needed.

storage/browser/fileapi/sandbox_file_stream_writer.cc

 // 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.
 
 #include "storage/browser/fileapi/sandbox_file_stream_writer.h"
 
 #include <stdint.h>
 
 #include <limits>
 #include <tuple>
@@ skipping 52 matching lines @@
 
 SandboxFileStreamWriter::~SandboxFileStreamWriter() {}
 
 int SandboxFileStreamWriter::Write(
     net::IOBuffer* buf, int buf_len,
     const net::CompletionCallback& callback) {
   has_pending_operation_ = true;
   if (local_file_writer_)
     return WriteInternal(buf, buf_len, callback);
 
-  net::CompletionCallback write_task =
-      base::Bind(&SandboxFileStreamWriter::DidInitializeForWrite,
-                 weak_factory_.GetWeakPtr(),
-                 make_scoped_refptr(buf), buf_len, callback);
+  net::CompletionCallback write_task = base::Bind(
+      &SandboxFileStreamWriter::DidInitializeForWrite,
+      weak_factory_.GetWeakPtr(), base::RetainedRef(buf), buf_len, callback);
   file_system_context_->operation_runner()->CreateSnapshotFile(
       url_, base::Bind(&SandboxFileStreamWriter::DidCreateSnapshotFile,
                        weak_factory_.GetWeakPtr(), write_task));
   return net::ERR_IO_PENDING;
 }
 
 int SandboxFileStreamWriter::Cancel(const net::CompletionCallback& callback) {
   if (!has_pending_operation_)
     return net::ERR_UNEXPECTED;
 
@@ skipping 166 matching lines @@
   DCHECK(cancel_callback_.is_null());
 
   // Write() is not called yet, so there's nothing to flush.
   if (!local_file_writer_)
     return net::OK;
 
   return local_file_writer_->Flush(callback);
 }
 
 }  // namespace storage