base::Bind: Convert Socket::Read.

net/socket/socks5_client_socket.cc

Index: net/socket/socks5_client_socket.cc
diff --git a/net/socket/socks5_client_socket.cc b/net/socket/socks5_client_socket.cc
index c9d2825dd447068bf74a8383087c4d7ff008d735..ea5fc7aaf4a9be740379e0c9ac9e69e57e322b40 100644
--- a/net/socket/socks5_client_socket.cc
+++ b/net/socket/socks5_client_socket.cc
@@ -188,7 +188,15 @@ int SOCKS5ClientSocket::Read(IOBuffer* buf, int buf_len,
                              OldCompletionCallback* callback) {
   DCHECK(completed_handshake_);
   DCHECK_EQ(STATE_NONE, next_state_);
-  DCHECK(!old_user_callback_);
+  DCHECK(!old_user_callback_ && user_callback_.is_null());
+
+  return transport_->socket()->Read(buf, buf_len, callback);
+}
+int SOCKS5ClientSocket::Read(IOBuffer* buf, int buf_len,
+                             const CompletionCallback& callback) {
+  DCHECK(completed_handshake_);
+  DCHECK_EQ(STATE_NONE, next_state_);
+  DCHECK(!old_user_callback_ && user_callback_.is_null());
 
   return transport_->socket()->Read(buf, buf_len, callback);
 }