# HG changeset patch
# User Martin Stransky <stransky@redhat.com>
# Parent  f8d21278244bc0531513131f85a45e5736207ae1
Bug 1169232 - [gtk3] add background class to tooltip window
              to get correct background color. r=?karlt

diff --git a/widget/gtk/nsLookAndFeel.cpp b/widget/gtk/nsLookAndFeel.cpp
--- a/widget/gtk/nsLookAndFeel.cpp
+++ b/widget/gtk/nsLookAndFeel.cpp
@@ -1004,16 +1004,17 @@ nsLookAndFeel::Init()
     gtk_style_context_get_background_color(style, GTK_STATE_FLAG_NORMAL, &color);
     sMozWindowBackground = GDK_RGBA_TO_NS_RGBA(color);
     gtk_style_context_get_color(style, GTK_STATE_FLAG_NORMAL, &color);
     sMozWindowText = GDK_RGBA_TO_NS_RGBA(color);
     gtk_style_context_restore(style);
 
     // tooltip foreground and background
     gtk_style_context_add_class(style, GTK_STYLE_CLASS_TOOLTIP);
+    gtk_style_context_add_class(style, GTK_STYLE_CLASS_BACKGROUND);
     gtk_style_context_get_background_color(style, GTK_STATE_FLAG_NORMAL, &color);
     sInfoBackground = GDK_RGBA_TO_NS_RGBA(color);
     gtk_style_context_get_color(style, GTK_STATE_FLAG_NORMAL, &color);
     sInfoText = GDK_RGBA_TO_NS_RGBA(color);
     g_object_unref(style);
 
     // menu foreground & menu background
     GtkWidget *accel_label = gtk_accel_label_new("M");