Add RetainedRef uses where needed.

storage/browser/fileapi/local_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/local_file_stream_writer.h"
 
 #include <stdint.h>
 
 #include "base/message_loop/message_loop.h"
 #include "net/base/file_stream.h"
@@ skipping 37 matching lines @@
   DCHECK(!has_pending_operation_);
   DCHECK(cancel_callback_.is_null());
 
   has_pending_operation_ = true;
   if (stream_impl_) {
     int result = InitiateWrite(buf, buf_len, callback);
     if (result != net::ERR_IO_PENDING)
       has_pending_operation_ = false;
     return result;
   }
-  return InitiateOpen(callback,
-                      base::Bind(&LocalFileStreamWriter::ReadyToWrite,
-                                 weak_factory_.GetWeakPtr(),
-                                 make_scoped_refptr(buf), buf_len, callback));
+  return InitiateOpen(
+      callback, base::Bind(&LocalFileStreamWriter::ReadyToWrite,
+                           weak_factory_.GetWeakPtr(), base::RetainedRef(buf),
+                           buf_len, callback));
 }
 
 int LocalFileStreamWriter::Cancel(const net::CompletionCallback& callback) {
   if (!has_pending_operation_)
     return net::ERR_UNEXPECTED;
 
   DCHECK(!callback.is_null());
   cancel_callback_ = callback;
   return net::ERR_IO_PENDING;
 }
@@ skipping 176 matching lines @@
     return false;
 
   net::CompletionCallback pending_cancel = cancel_callback_;
   has_pending_operation_ = false;
   cancel_callback_.Reset();
   pending_cancel.Run(net::OK);
   return true;
 }
 
 }  // namespace storage