fixup! [ozone/wayland] Add support for menu window type.

Remove accidentely added CHECK in the popup wrapper v6.
added in https://chromium-review.googlesource.com/107530

TBR=rjkroege@chromium.org

Bug: 578890
Change-Id: I375668380a91b71665873bd682c909dad9e7f50a
Reviewed-on: https://chromium-review.googlesource.com/1109516Reviewed-by: Maksim Sisov <msisov@igalia.com>
Commit-Queue: Maksim Sisov <msisov@igalia.com>
Cr-Commit-Position: refs/heads/master@{#569198}

ui/ozone/platform/wayland/xdg_popup_wrapper_v6.cc

@@ -101,7 +101,6 @@ void XDGPopupWrapperV6::Configure(void* data,
 // static
 void XDGPopupWrapperV6::PopupDone(void* data,
                                   struct zxdg_popup_v6* zxdg_popup_v6) {
-  CHECK(false);
   WaylandWindow* window =
       static_cast<XDGPopupWrapperV6*>(data)->wayland_window_;
   DCHECK(window);