Call XInitThreads on host startup

remoting/host/it2me/it2me_native_messaging_host_main.cc

 // Copyright 2013 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.
 
 #include "remoting/host/it2me/it2me_native_messaging_host_main.h"
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/i18n/icu_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "media/base/media.h"
 #include "net/socket/ssl_server_socket.h"
 #include "remoting/base/breakpad.h"
 #include "remoting/base/resources.h"
 #include "remoting/host/host_exit_codes.h"
 #include "remoting/host/it2me/it2me_native_messaging_host.h"
 #include "remoting/host/logging.h"
 #include "remoting/host/usage_stats_consent.h"
 
 #if defined(OS_LINUX)
 #include <gtk/gtk.h>
+#include <X11/Xlib.h>
 #endif  // defined(OS_LINUX)
 
 #if defined(OS_MACOSX)
 #include "base/mac/scoped_nsautorelease_pool.h"
 #endif  // defined(OS_MACOSX)
 
 #if defined(OS_WIN)
 #include <commctrl.h>
 #endif  // defined(OS_WIN)
 
@@ skipping 24 matching lines @@
   InitCommonControlsEx(&info);
 #endif  // defined(OS_WIN)
 
   // Required to find the ICU data file, used by some file_util routines.
   base::i18n::InitializeICU();
 
   remoting::LoadResources("");
 
   // Cannot use TOOLKIT_GTK because it is not defined when aura is enabled.
 #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. Calling with NULL arguments because we don't have
   // any command line arguments for gtk to consume.
   gtk_init(NULL, NULL);
 #endif  // OS_LINUX
 
   // Enable support for SSL server sockets, which must be done while still
   // single-threaded.
   net::EnableSSLServerSockets();
 
@@ skipping 54 matching lines @@
   // This object instance is required by Chrome code (such as MessageLoop).
   base::AtExitManager exit_manager;
 
   base::CommandLine::Init(argc, argv);
   remoting::InitHostLogging();
 
   return StartIt2MeNativeMessagingHost();
 }
 
 }  // namespace remoting