Migrate net/socket/socket.h, net/socket/stream_socket.h to base::Bind().

net/udp/udp_client_socket.cc

Index: net/udp/udp_client_socket.cc
diff --git a/net/udp/udp_client_socket.cc b/net/udp/udp_client_socket.cc
index 4bb38855aa7bcd6ef49a9ad46a31dfb849d95206..bbc32d4f28e725f2461136b0f22bd9fe5490049d 100644
--- a/net/udp/udp_client_socket.cc
+++ b/net/udp/udp_client_socket.cc
@@ -24,18 +24,13 @@ int UDPClientSocket::Connect(const IPEndPoint& address) {
 
 int UDPClientSocket::Read(IOBuffer* buf,
                           int buf_len,
-                          OldCompletionCallback* callback) {
-  return socket_.Read(buf, buf_len, callback);
-}
-int UDPClientSocket::Read(IOBuffer* buf,
-                          int buf_len,
                           const CompletionCallback& callback) {
   return socket_.Read(buf, buf_len, callback);
 }
 
 int UDPClientSocket::Write(IOBuffer* buf,
                           int buf_len,
-                          OldCompletionCallback* callback) {
+                          const CompletionCallback& callback) {
   return socket_.Write(buf, buf_len, callback);
 }