Move ui::GetAtom to gfx::GetAtom

ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc

Index: ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc
diff --git a/ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc b/ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc
index c96661c482fb778d6327cea632cbeb0dbc3f07b6..8714f03f65c82a6a03a4ab22172b93b44f9f417e 100644
--- a/ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc
+++ b/ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc
@@ -13,8 +13,8 @@
 #include "base/strings/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/dragdrop/file_info.h"
-#include "ui/base/x/x11_util.h"
 #include "ui/events/platform/x11/x11_event_source_glib.h"
+#include "ui/gfx/x/x11_atom_cache.h"
 #include "url/gurl.h"
 
 const char kFileURL[] = "file:///home/user/file.txt";
@@ -33,7 +33,8 @@ class OSExchangeDataProviderAuraX11Test : public testing::Test {
     scoped_refptr<base::RefCountedMemory> mem(
         base::RefCountedString::TakeString(&contents_copy));
 
-    provider.format_map_.Insert(GetAtom(ui::Clipboard::kMimeTypeURIList), mem);
+    provider.format_map_.Insert(gfx::GetAtom(ui::Clipboard::kMimeTypeURIList),
+                                mem);
   }
 
  protected: