Move ui::GetAtom to gfx::GetAtom

ui/views/widget/desktop_aura/x11_desktop_handler.cc

Index: ui/views/widget/desktop_aura/x11_desktop_handler.cc
diff --git a/ui/views/widget/desktop_aura/x11_desktop_handler.cc b/ui/views/widget/desktop_aura/x11_desktop_handler.cc
index 3ee269bb3d4bec82e20a74f1b827029ba5825e2a..f5e7f20766276a15cf5e416f48017ae901ea799a 100644
--- a/ui/views/widget/desktop_aura/x11_desktop_handler.cc
+++ b/ui/views/widget/desktop_aura/x11_desktop_handler.cc
@@ -12,9 +12,9 @@
 #include "ui/aura/env.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/base/x/x11_menu_list.h"
-#include "ui/base/x/x11_util.h"
 #include "ui/base/x/x11_window_event_manager.h"
 #include "ui/events/platform/platform_event_source.h"
+#include "ui/gfx/x/x11_atom_cache.h"
 #include "ui/gfx/x/x11_error_tracker.h"
 #include "ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h"
 
@@ -90,7 +90,7 @@ bool X11DesktopHandler::CanDispatchEvent(const ui::PlatformEvent& event) {
 uint32_t X11DesktopHandler::DispatchEvent(const ui::PlatformEvent& event) {
   switch (event->type) {
     case PropertyNotify: {
-      if (event->xproperty.atom == ui::GetAtom("_NET_CURRENT_DESKTOP")) {
+      if (event->xproperty.atom == gfx::GetAtom("_NET_CURRENT_DESKTOP")) {
         if (UpdateWorkspace()) {
           for (views::X11DesktopHandlerObserver& observer : observers_)
             observer.OnWorkspaceChanged(workspace_);