Split //ui/events/devices into two targets.

ui/events/devices/x11/device_list_cache_x11.h

Index: ui/events/devices/x11/device_list_cache_x11.h
diff --git a/ui/events/devices/x11/device_list_cache_x11.h b/ui/events/devices/x11/device_list_cache_x11.h
index 2ff3943a3802eb5108c6e74f7c182145df18eb81..1618fc14c68e4ae2ba27e9d0d957739825f53c49 100644
--- a/ui/events/devices/x11/device_list_cache_x11.h
+++ b/ui/events/devices/x11/device_list_cache_x11.h
@@ -12,7 +12,7 @@
 #include <memory>
 
 #include "base/macros.h"
-#include "ui/events/devices/events_devices_export.h"
+#include "ui/events/devices/x11/events_devices_x11_export.h"
 #include "ui/gfx/x/x11_types.h"
 
 namespace base {
@@ -38,7 +38,7 @@ namespace ui {
 // A class to cache the current XInput device list. This minimized the
 // round-trip time to the X server whenever such a device list is needed. The
 // update function will be called on each incoming XI_HierarchyChanged event.
-class EVENTS_DEVICES_EXPORT DeviceListCacheX11 {
+class EVENTS_DEVICES_X11_EXPORT DeviceListCacheX11 {
  public:
   static DeviceListCacheX11* GetInstance();