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

ui/events/x/touch_factory_x11.h

Index: ui/events/x/touch_factory_x11.h
diff --git a/ui/events/x/touch_factory_x11.h b/ui/events/x/touch_factory_x11.h
index 4c89cf3a804230a67c4baa36c0ff10e3204461a4..6fb023731d0b01fb22a7390d1971a73eeefa86fc 100644
--- a/ui/events/x/touch_factory_x11.h
+++ b/ui/events/x/touch_factory_x11.h
@@ -10,7 +10,7 @@
 #include <vector>
 
 #include "base/timer/timer.h"
-#include "ui/events/events_export.h"
+#include "ui/events/events_base_export.h"
 #include "ui/gfx/sequential_id_generator.h"
 
 template <typename T> struct DefaultSingletonTraits;
@@ -23,7 +23,7 @@ typedef union _XEvent XEvent;
 namespace ui {
 
 // Functions related to determining touch devices.
-class EVENTS_EXPORT TouchFactory {
+class EVENTS_BASE_EXPORT TouchFactory {
  private:
   TouchFactory();
   ~TouchFactory();