Add serial bulk reads.

chrome/browser/extensions/api/serial/serial_connection.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 "chrome/browser/extensions/api/serial/serial_connection.h"
 
 #include <string>
 
 #include "base/file_path.h"
 #include "base/string_util.h"
@@ skipping 36 matching lines @@
   return PostOpen();
 }
 
 void SerialConnection::Close() {
   if (file_ != base::kInvalidPlatformFileValue) {
     base::ClosePlatformFile(file_);
     file_ = base::kInvalidPlatformFileValue;
   }
 }
 
-int SerialConnection::Read(uint8* byte) {
-  DCHECK(byte);
+int SerialConnection::Read(scoped_refptr<net::IOBufferWithSize> io_buffer) {
+  DCHECK(io_buffer->data());
   return base::ReadPlatformFileAtCurrentPos(file_,
-                                            reinterpret_cast<char*>(byte), 1);
+                                            io_buffer->data(),
+                                            io_buffer->size());
 }
 
 int SerialConnection::Write(scoped_refptr<net::IOBuffer> io_buffer,
                             int byte_count) {
   DCHECK(io_buffer->data());
   DCHECK(byte_count >= 0);
   return base::WritePlatformFileAtCurrentPos(file_,
                                              io_buffer->data(), byte_count);
 }
 
 void SerialConnection::Flush() {
   base::FlushPlatformFile(file_);
 }
 
 }  // namespace extensions