x11: Move XInput2 availability information out of the message pump.

ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc

Index: ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc
diff --git a/ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc b/ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc
index 757b509555dbacf800b617d6d6c920c459f801ae..3fc6c98ead85acf838baba74ef2428c554a25a44 100644
--- a/ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc
+++ b/ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc
@@ -25,6 +25,7 @@
 #include "ui/base/x/x11_util.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/x/device_data_manager.h"
+#include "ui/events/x/device_list_cache_x.h"
 #include "ui/events/x/touch_factory_x11.h"
 #include "ui/gfx/insets.h"
 #include "ui/gfx/path.h"
@@ -934,7 +935,7 @@ void DesktopRootWindowHostX11::InitX11Window(
   XSelectInput(xdisplay_, xwindow_, event_mask);
   XFlush(xdisplay_);
 
-  if (base::MessagePumpForUI::HasXInput2())
+  if (ui::IsXInput2Available())
     ui::TouchFactory::GetInstance()->SetupXI2ForXWindow(xwindow_);
 
   // TODO(erg): We currently only request window deletion events. We also