Delete wrappers for snprintf and vsnprintf

Bug: webrtc:6424
Change-Id: I99373dc86e25caff20111408b104ff5dafa7b711
Reviewed-on: https://webrtc-review.googlesource.com/c/106322
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25210}
diff --git a/examples/peerconnection/client/peer_connection_client.cc b/examples/peerconnection/client/peer_connection_client.cc
index bb79d16..f173e42 100644
--- a/examples/peerconnection/client/peer_connection_client.cc
+++ b/examples/peerconnection/client/peer_connection_client.cc
@@ -14,14 +14,11 @@
 #include "rtc_base/checks.h"
 #include "rtc_base/logging.h"
 #include "rtc_base/nethelpers.h"
-#include "rtc_base/stringutils.h"
 
 #ifdef WIN32
 #include "rtc_base/win32socketserver.h"
 #endif
 
-using rtc::sprintfn;
-
 namespace {
 
 // This is our magical hangup signal.
@@ -136,7 +133,7 @@
   hanging_get_.reset(CreateClientSocket(server_address_.ipaddr().family()));
   InitSocketSignals();
   char buffer[1024];
-  sprintfn(buffer, sizeof(buffer), "GET /sign_in?%s HTTP/1.0\r\n\r\n",
+  snprintf(buffer, sizeof(buffer), "GET /sign_in?%s HTTP/1.0\r\n\r\n",
            client_name_.c_str());
   onconnect_data_ = buffer;
 
@@ -158,9 +155,9 @@
     return false;
 
   char headers[1024];
-  sprintfn(headers, sizeof(headers),
+  snprintf(headers, sizeof(headers),
            "POST /message?peer_id=%i&to=%i HTTP/1.0\r\n"
-           "Content-Length: %i\r\n"
+           "Content-Length: %zu\r\n"
            "Content-Type: text/plain\r\n"
            "\r\n",
            my_id_, peer_id, message.length());
@@ -190,7 +187,7 @@
 
     if (my_id_ != -1) {
       char buffer[1024];
-      sprintfn(buffer, sizeof(buffer),
+      snprintf(buffer, sizeof(buffer),
                "GET /sign_out?peer_id=%i HTTP/1.0\r\n\r\n", my_id_);
       onconnect_data_ = buffer;
       return ConnectControlSocket();
@@ -237,7 +234,7 @@
 
 void PeerConnectionClient::OnHangingGetConnect(rtc::AsyncSocket* socket) {
   char buffer[1024];
-  sprintfn(buffer, sizeof(buffer), "GET /wait?peer_id=%i HTTP/1.0\r\n\r\n",
+  snprintf(buffer, sizeof(buffer), "GET /wait?peer_id=%i HTTP/1.0\r\n\r\n",
            my_id_);
   int len = static_cast<int>(strlen(buffer));
   int sent = socket->Send(buffer, len);