mouse: remove locate-pointer

The current implementation in gnome-settings-daemon relies on X11
and cannot work on Wayland.

Remove the locate-pointer functionality and the relevant helper from
gnome-settings-daemon to move to the Wayland compositor instead, i.e.
mutter/gnome-shell.

Also, move the gsettings key for "locate-pointer" to "org.gnome.desktop.
interface".

https://gitlab.gnome.org/GNOME/gnome-settings-daemon/merge_requests/86
https://gitlab.gnome.org/GNOME/gsettings-desktop-schemas/merge_requests/19
https://gitlab.gnome.org/GNOME/mutter/merge_requests/453
https://gitlab.gnome.org/GNOME/gnome-shell/issues/981

.gitignore

@@ -87,7 +87,6 @@ plugins/smartcard/org.gnome.ScreenSaver.c
 plugins/smartcard/org.gnome.ScreenSaver.h
 plugins/smartcard/org.gnome.SessionManager.c
 plugins/smartcard/org.gnome.SessionManager.h
-plugins/mouse/gsd-locate-pointer
 plugins/mouse/gsd-test-mouse
 plugins/power/gsd-backlight-helper
 plugins/power/gsd-power-enums-update

data/gnome-settings-daemon.convert

@@ -30,7 +30,6 @@ volume-up = /apps/gnome_settings_daemon/keybindings/volume_up
 www = /apps/gnome_settings_daemon/keybindings/www
 
 [org.gnome.settings-daemon.peripherals.mouse]
-locate-pointer = /desktop/gnome/peripherals/mouse/locate_pointer
 double-click = /desktop/gnome/peripherals/mouse/double_click
 drag-threshold = /desktop/gnome/peripherals/mouse/drag_threshold
 

data/org.gnome.settings-daemon.peripherals.gschema.xml.in

@@ -47,10 +47,6 @@
     </key>
   </schema>
   <schema gettext-domain="@GETTEXT_PACKAGE@" id="org.gnome.settings-daemon.peripherals.mouse" path="/org/gnome/settings-daemon/peripherals/mouse/">
-    <key name="locate-pointer" type="b">
-      <default>false</default>
-      <summary>Highlights the current location of the pointer when the Control key is pressed and released.</summary>
-    </key>
     <key name="double-click" type="i">
       <default>400</default>
       <summary>Double click time</summary>