Call XInitThreads on host startup

remoting/host/remoting_me2me_host.cc

 // 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.
 //
 // This file implements a standalone host process for Me2Me.
 
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
@@ skipping 73 matching lines @@
 #include "remoting/host/pam_authorization_factory_posix.h"
 #include "remoting/host/posix/signal_handler.h"
 #endif  // defined(OS_POSIX)
 
 #if defined(OS_MACOSX)
 #include "base/mac/scoped_cftyperef.h"
 #endif  // defined(OS_MACOSX)
 
 #if defined(OS_LINUX)
 #include <gtk/gtk.h>
+#include <X11/Xlib.h>
 #include "remoting/host/audio_capturer_linux.h"
 #endif  // defined(OS_LINUX)
 
 #if defined(OS_WIN)
 #include <commctrl.h>
 #include "base/win/registry.h"
 #include "base/win/scoped_handle.h"
 #include "remoting/host/pairing_registry_delegate_win.h"
 #include "remoting/host/win/session_desktop_environment.h"
 #endif  // defined(OS_WIN)
@@ skipping 1306 matching lines @@
                  "Requested by %s at %s, line %d.",
                  function_name.c_str(), file_name.c_str(), line_number);
   base::debug::Alias(message);
 
   // The daemon requested us to crash the process.
   CHECK(false) << message;
 }
 
 int HostProcessMain() {
 #if defined(OS_LINUX)
+  // Required in order for us to run multiple X11 threads.
+  XInitThreads();
+
   // Required for any calls into GTK functions, such as the Disconnect and
   // Continue windows, though these should not be used for the Me2Me case
   // (crbug.com/104377).
   gtk_init(NULL, NULL);
 #endif
 
   // Enable support for SSL server sockets, which must be done while still
   // single-threaded.
   net::EnableSSLServerSockets();
 
@@ skipping 14 matching lines @@
   int exit_code = kSuccessExitCode;
   new HostProcess(context.Pass(), &exit_code);
 
   // Run the main (also UI) message loop until the host no longer needs it.
   message_loop.Run();
 
   return exit_code;
 }
 
 }  // namespace remoting