[gnome-flashback] shell: add widget name for GfOsdWindow

[Alberts Muktupāvels <muktupavels src gnome org>]

commit afb6196da5e259001a3fe697b92856c08fbd82ad
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Tue Jan 19 14:39:13 2016 +0200

    shell: add widget name for GfOsdWindow
    
    We don't add any custom style to this window, but other themes
    might want to do it.

 data/theme/Adwaita/gnome-flashback-dark.css |    3 +++
 data/theme/Adwaita/gnome-flashback.css      |    3 +++
 data/theme/HighContrast/gnome-flashback.css |    3 +++
 gnome-flashback/libshell/gf-osd-window.c    |    2 ++
 4 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/data/theme/Adwaita/gnome-flashback-dark.css b/data/theme/Adwaita/gnome-flashback-dark.css
index 714ac92..ab45eef 100644
--- a/data/theme/Adwaita/gnome-flashback-dark.css
+++ b/data/theme/Adwaita/gnome-flashback-dark.css
@@ -14,3 +14,6 @@ gf-popup-window.solid {
 #gf-label-window {
   font-size: 40px;
 }
+
+#gf-osd-window {
+}
diff --git a/data/theme/Adwaita/gnome-flashback.css b/data/theme/Adwaita/gnome-flashback.css
index 3a40df1..6f59b83 100644
--- a/data/theme/Adwaita/gnome-flashback.css
+++ b/data/theme/Adwaita/gnome-flashback.css
@@ -14,3 +14,6 @@ gf-popup-window.solid {
 #gf-label-window {
   font-size: 40px;
 }
+
+#gf-osd-window {
+}
diff --git a/data/theme/HighContrast/gnome-flashback.css b/data/theme/HighContrast/gnome-flashback.css
index 4cfa089..192dd00 100644
--- a/data/theme/HighContrast/gnome-flashback.css
+++ b/data/theme/HighContrast/gnome-flashback.css
@@ -14,3 +14,6 @@ gf-popup-window.solid {
 #gf-label-window {
   font-size: 40px;
 }
+
+#gf-osd-window {
+}
diff --git a/gnome-flashback/libshell/gf-osd-window.c b/gnome-flashback/libshell/gf-osd-window.c
index 40f8179..c694401 100644
--- a/gnome-flashback/libshell/gf-osd-window.c
+++ b/gnome-flashback/libshell/gf-osd-window.c
@@ -143,6 +143,8 @@ gf_osd_window_init (GfOsdWindow *window)
 
   g_signal_connect (window, "fade-finished",
                     G_CALLBACK (fade_finished_cb), NULL);
+
+  gtk_widget_set_name (GTK_WIDGET (window), "gf-osd-window");
 }
 
 GfOsdWindow *