net: FileStream::Read/Write() to take IOBuffer* instead of char*

net/url_request/url_request_file_job.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.
 
 // For loading files, we make use of overlapped i/o to ensure that reading from
 // the filesystem (e.g., a network filesystem) does not block the calling
 // thread.  An alternative approach would be to use a background thread or pool
 // of threads, but it seems better to leverage the operating system's ability
 // to do background file reads for us.
 //
@@ skipping 169 matching lines @@
   if (remaining_bytes_ < dest_size)
     dest_size = static_cast<int>(remaining_bytes_);
 
   // If we should copy zero bytes because |remaining_bytes_| is zero, short
   // circuit here.
   if (!dest_size) {
     *bytes_read = 0;
     return true;
   }
 
-  int rv = stream_.Read(dest->data(), dest_size,
+  int rv = stream_.Read(dest, dest_size,
                         base::Bind(&URLRequestFileJob::DidRead,
                                    base::Unretained(this)));
   if (rv >= 0) {
     // Data is immediately available.
     *bytes_read = rv;
     remaining_bytes_ -= rv;
     DCHECK_GE(remaining_bytes_, 0);
     return true;
   }
 
@@ skipping 158 matching lines @@
     NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, result));
   }
 
   remaining_bytes_ -= result;
   DCHECK_GE(remaining_bytes_, 0);
 
   NotifyReadComplete(result);
 }
 
 }  // namespace net