[gnome-control-center] power: Fix battery percentage control not showing on mobile devices.

[Robert Ancell <rancell src gnome org>]

commit 4b0c908e1f5943cb291a7ea90ae6bccb05a0eae3
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed Nov 25 11:59:52 2020 +1300

    power: Fix battery percentage control not showing on mobile devices.
    
    If you can't suspend/hibernate or on a mobile device or VM then the battery
    percentage is control is supposed to be shown.
    The parent widgets are hidden though, so this doesn't work.
    Always show the parents, as all branches show something here.
    
    This was added in 6a65dcf693a3c71d7554357b027d5cdc8de80d00.

 panels/power/cc-power-panel.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)
---
diff --git a/panels/power/cc-power-panel.c b/panels/power/cc-power-panel.c
index b72ff0b09..451ae85d3 100644
--- a/panels/power/cc-power-panel.c
+++ b/panels/power/cc-power-panel.c
@@ -2014,12 +2014,14 @@ add_general_section (CcPowerPanel *self)
   /* Frame header */
   s = g_markup_printf_escaped ("<b>%s</b>", _("Suspend & Power Button"));
   label = gtk_label_new (s);
+  gtk_widget_show (label);
   gtk_label_set_use_markup (GTK_LABEL (label), TRUE);
   gtk_widget_set_halign (label, GTK_ALIGN_START);
   gtk_widget_set_margin_bottom (label, 12);
   gtk_box_pack_start (GTK_BOX (self->vbox_power), label, FALSE, TRUE, 0);
 
   widget = gtk_list_box_new ();
+  gtk_widget_show (widget);
   self->boxes_reverse = g_list_prepend (self->boxes_reverse, widget);
   g_signal_connect_object (widget, "keynav-failed", G_CALLBACK (keynav_failed), self, G_CONNECT_SWAPPED);
   gtk_list_box_set_selection_mode (GTK_LIST_BOX (widget), GTK_SELECTION_NONE);
@@ -2035,6 +2037,7 @@ add_general_section (CcPowerPanel *self)
                                ATK_OBJECT (gtk_widget_get_accessible (label)));
 
   box = gtk_frame_new (NULL);
+  gtk_widget_show (box);
   gtk_frame_set_shadow_type (GTK_FRAME (box), GTK_SHADOW_IN);
   gtk_widget_set_margin_bottom (box, 32);
   gtk_container_add (GTK_CONTAINER (box), widget);
@@ -2052,10 +2055,6 @@ add_general_section (CcPowerPanel *self)
       return;
     }
 
-  gtk_widget_show (label);
-  gtk_widget_show (widget);
-  gtk_widget_show (box);
-
   /* Power button row */
   row = no_prelight_row_new ();
   gtk_widget_show (row);