message: Update peerconnection example to not use Win32Socket
  Followup to
  Cr-Commit-Position: refs/heads/main@{#35423}
diff: #include "rtc_base/logging.h"
  #include "rtc_base/net_helpers.h"
  -#ifdef WIN32
  -#include "rtc_base/win32_socket_server.h"
  -#endif
  -
  namespace {
  // This is our magical hangup signal.
  @@ -27,17 +23,9 @@ const char kByeMessage[] = "BYE";
  const int kReconnectDelay = 2000;
  rtc::Socket* CreateClientSocket(int family) {
  -#ifdef WIN32
  - rtc::Win32Socket* sock = new rtc::Win32Socket();
  - sock->CreateT(family, SOCK_STREAM);
  - return sock;
  -#elif defined(WEBRTC_POSIX)
  rtc::Thread* thread = rtc::Thread::Current();
  RTC_DCHECK(thread != NULL);
  return thread->socketserver()->CreateSocket(family, SOCK_STREAM);
  -#else
  -#error Platform not supported.
  -#endif
  }
  } // namespace
  