Extract touchscreen device management into a generic manager

ui/events/platform/x11/x11_event_source.cc

Index: ui/events/platform/x11/x11_event_source.cc
diff --git a/ui/events/platform/x11/x11_event_source.cc b/ui/events/platform/x11/x11_event_source.cc
index 25e74098fac3825bc0e886e6b6967875ca0b55e8..20237dd32f13cce005a8a48f1123ad22b1c852c6 100644
--- a/ui/events/platform/x11/x11_event_source.cc
+++ b/ui/events/platform/x11/x11_event_source.cc
@@ -12,6 +12,7 @@
 #include "base/logging.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
+#include "ui/events/x/device_data_manager_x11.h"
 #include "ui/gfx/x/x11_types.h"
 
 namespace ui {
@@ -83,6 +84,7 @@ X11EventSource::X11EventSource(XDisplay* display)
     : display_(display),
       continue_stream_(true) {
   CHECK(display_);
+  DeviceDataManagerX11::CreateInstance();
   InitializeXInput2(display_);
   InitializeXkb(display_);
 }