Add serial bulk reads.

chrome/browser/extensions/api/serial/serial_connection.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_SERIAL_SERIAL_CONNECTION_H_
 #define CHROME_BROWSER_EXTENSIONS_API_SERIAL_SERIAL_CONNECTION_H_
 
 #include <set>
 #include <string>
 
@@ skipping 18 matching lines @@
  public:
   SerialConnection(const std::string& port,
                    int bitrate,
                    ApiResourceEventNotifier* event_notifier);
   virtual ~SerialConnection();
 
   virtual bool Open();
   virtual void Close();
   virtual void Flush();
 
-  virtual int Read(uint8* byte);
+  virtual int Read(scoped_refptr<net::IOBufferWithSize> io_buffer);
   virtual int Write(scoped_refptr<net::IOBuffer> io_buffer, int byte_count);
 
   struct ControlSignals {
     // Sent from workstation to device. The should_set_ values indicate whether
     // SetControlSignals should change the given signal (true) or else leave it
     // as-is (false).
     bool should_set_dtr;
     bool dtr;
     bool should_set_rts;
     bool rts;
@@ skipping 13 matching lines @@
 
  private:
   std::string port_;
   int bitrate_;
   base::PlatformFile file_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_SERIAL_SERIAL_CONNECTION_H_