Remove implicit conversions from scoped_refptr to T* in c/b/chromeos/file*

chrome/browser/chromeos/file_system_provider/fileapi/buffering_file_stream_reader.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 "chrome/browser/chromeos/file_system_provider/fileapi/buffering_file_stream_reader.h"
 
 #include <algorithm>
 
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
@@ skipping 66 matching lines @@
   return read_bytes;
 }
 
 void BufferingFileStreamReader::Preload(
     const net::CompletionCallback& callback) {
   // TODO(mtomasz): Dynamically calculate the chunk size. Start from a small
   // one, then increase for consecutive requests. That would improve performance
   // when reading just small chunks, instead of the entire file.
   const int preload_bytes = buffer_size_;
 
-  const int result =
-      file_stream_reader_->Read(preloading_buffer_, preload_bytes, callback);
+  const int result = file_stream_reader_->Read(
+      preloading_buffer_.get(), preload_bytes, callback);
   DCHECK_EQ(result, net::ERR_IO_PENDING);
 }
 
 void BufferingFileStreamReader::OnPreloadCompleted(
     scoped_refptr<net::IOBuffer> buffer,
     int buffer_length,
     const net::CompletionCallback& callback,
     int result) {
   if (result < 0) {
     callback.Run(result);
     return;
   }
 
   preloading_buffer_offset_ = 0;
   buffered_bytes_ = result;
 
   callback.Run(CopyFromPreloadingBuffer(buffer, buffer_length));
 }
 
 }  // namespace file_system_provider
 }  // namespace chromeos