--- ui/gfx/x/atom_cache.cc.orig	2025-01-27 17:37:37 UTC
+++ ui/gfx/x/atom_cache.cc
@@ -155,6 +155,7 @@ constexpr auto kAtomsToCache = std::to_array<const cha
     "application/octet-stream",
     "application/vnd.chromium.test",
     "chromium/filename",
+    "chromium/from-privileged",
     "chromium/x-bookmark-entries",
     "chromium/x-browser-actions",
     "chromium/x-file-system-files",