[gtk+] (40 commits) Non-fast-forward update to branch wip/attente/popup-at

[William Hua <williamhua src gnome org>]

The branch 'wip/attente/popup-at' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  a4f01e8... gdkwindow: store shadow sizes
  43cfb19... gdkwindow: add gdk_window_move_to_rect ()
  59300da... gtkmenu: add gtk_menu_popup_at_* ()
  33f3994... gtkmenu: position menu using gdk_window_move_to_rect ()
  df38ed2... add demo for testing gtk_menu_popup_at_* ()
  02030aa... port to new gtk_menu_popup_at_* () functions
  86052c4... mir: implement gdk_window_move_to_rect ()

Commits added to the branch:

  c7654c7... Add a css parser test for background-blend-mode (*)
  b840a59... Change the priority of the window-close idle to G_PRIORITY_ (*)
  96d8afb... Add a portal helper (*)
  c6416ae... Add gtk_show_uri_on_window (*)
  e479574... about dialog: Use gtk_show_uri_on_window (*)
  01d0bac... Initial version of file chooser portal support (*)
  35181e7... Add api to serialize GtkFileFilter to a variant (*)
  0acb6a0... portal: Send file filters to the portal (*)
  3b3e1ec... portal: Sent more data along (*)
  6cf71ed... Use the portal when sandboxed (*)
  445d12e... file chooser portal: Port to new Request API (*)
  2b77eaa... Adapt to simplified file chooser portal api (*)
  6fc7485... GtkFileChooser: Add abstract api for comboboxes and checkbu (*)
  5839c13... Implement combobox apis in GtkFileChooserWidget (*)
  4600209... Implement combobox apis for GtkFileChooserNativePortal (*)
  04cec61... Support the Inhibit portal (*)
  a3764e2... print settings: Add api to serialize to a GVariant (*)
  42ae48a... Add api to serialize a GtkPaperSize to a GVariant (*)
  cc97e55... page setup: Add api to serialize to a GVariant (*)
  56ebfc6... print job: Add api to send data from an fd (*)
  25fed03... Add portal support to GtkPrintOperation (*)
  3756a1e... Fix up the documentation of GtkTextView::move-viewport (*)
  ae8c137... Updated POTFILES.in (*)
  725d5b1... Adwaita: remove some check and radio related cruft (*)
  53a1f0b... Adwaita: remove old popover checkbutton/radiobutton style (*)
  b5a2bba... docs: Improve gdk_window_create_similar_image_surface() (*)
  9747312... placesview: fix open action for locations without a mount o (*)
  3831b2a... placesview: fix spelling of WebDAV in a translatable string (*)
  c0dae6c... docs: Attempt a better explanation for gtk_widget_destroy() (*)
  8f1fd7d... docs: Fix typo. (*)
  500c9db... Remove a few mentions of GtkVBox in the docs (*)
  d8815f3... gtk/gtkfilechoosernativeportal.c: Don't use g_autoptr() (*)
  6184edc... GtkFileChooserNativePortal: Use correct response code for a (*)
  ad1ab17... gdkwindow: store shadow sizes
  9eae454... gdkwindow: add gdk_window_move_to_rect ()
  2a17902... gtkmenu: add gtk_menu_popup_at_* ()
  2dc9a1b... gtkmenu: position menu using gdk_window_move_to_rect ()
  c44d652... add demo for testing gtk_menu_popup_at_* ()
  b99f4d9... port to new gtk_menu_popup_at_* () functions
  dda5518... mir: implement gdk_window_move_to_rect ()

(*) This commit already existed in another branch; no separate mail sent