Improve socket.write() to make sure all data will be sent out.

chrome/browser/extensions/api/socket/udp_socket.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_SOCKET_UDP_SOCKET_H_
 #define CHROME_BROWSER_EXTENSIONS_API_SOCKET_UDP_SOCKET_H_
 #pragma once
 
 #include <string>
 
 #include "chrome/browser/extensions/api/socket/socket.h"
 #include "net/udp/udp_socket.h"
 
 namespace extensions {
 
 class APIResourceEventNotifier;
 
 class UDPSocket : public Socket {
  public:
   explicit UDPSocket(APIResourceEventNotifier* event_notifier);
   virtual ~UDPSocket();
 
   virtual void Connect(const std::string& address,
                        int port,
                        const CompletionCallback& callback) OVERRIDE;
   virtual void Disconnect() OVERRIDE;
   virtual int Bind(const std::string& address, int port) OVERRIDE;
   virtual void Read(int count,
                     const ReadCompletionCallback& callback) OVERRIDE;
-  virtual void Write(scoped_refptr<net::IOBuffer> io_buffer,
-                     int bytes,
-                     const CompletionCallback& callback) OVERRIDE;
   virtual void RecvFrom(int count,
                         const RecvFromCompletionCallback& callback) OVERRIDE;
   virtual void SendTo(scoped_refptr<net::IOBuffer> io_buffer,
                       int byte_count,
                       const std::string& address,
                       int port,
                       const CompletionCallback& callback) OVERRIDE;
 
+ protected:
+  virtual int WriteImpl(net::IOBuffer* io_buffer,
+                        int io_buffer_size,
+                        const net::CompletionCallback& callback) OVERRIDE;
+
  private:
   // Make net::IPEndPoint can be refcounted
   typedef base::RefCountedData<net::IPEndPoint> IPEndPoint;
 
-  virtual void OnReadComplete(scoped_refptr<net::IOBuffer> io_buffer,
-                              int result);
-  virtual void OnWriteComplete(int result);
-  virtual void OnRecvFromComplete(scoped_refptr<net::IOBuffer> io_buffer,
-                                  scoped_refptr<IPEndPoint> address,
-                                  int result);
-  virtual void OnSendToComplete(int result);
+  void OnReadComplete(scoped_refptr<net::IOBuffer> io_buffer,
+                      int result);
+  void OnRecvFromComplete(scoped_refptr<net::IOBuffer> io_buffer,
+                          scoped_refptr<IPEndPoint> address,
+                          int result);
+  void OnSendToComplete(int result);
 
   net::UDPSocket socket_;
 
   ReadCompletionCallback read_callback_;
 
-  CompletionCallback write_callback_;
-
   RecvFromCompletionCallback recv_from_callback_;
 
   CompletionCallback send_to_callback_;
 };
 
 }  //  namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_SOCKET_UDP_SOCKET_H_