[gtk+/gtk-3-22] themes: Actually apply the frame.flat style class

[Daniel Boles <dboles src gnome org>]

commit 0c20604932fa398ec8f52f049bf91b7128ff2e47
Author: Daniel Boles <dboles src gnome org>
Date:   Sun Feb 19 12:22:48 2017 +0000

    themes: Actually apply the frame.flat style class
    
    The docs say that this class should be put on the frame node, and that’s
    all we can do from C code, but the CSS was selecting on the border node.
    The result was that adding .flat did not disable the border as expected.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=778905

 gtk/theme/Adwaita/gtk-contained-dark.css         |    2 +-
 gtk/theme/Adwaita/gtk-contained.css              |    2 +-
 gtk/theme/HighContrast/gtk-contained-inverse.css |    2 +-
 gtk/theme/HighContrast/gtk-contained.css         |    2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index da5c453..5f68aec 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -3789,7 +3789,7 @@ frame > border,
   padding: 0;
   border-radius: 0;
   border: 1px solid #1b1f20; }
-  frame > border.flat,
+  frame.flat > border,
   .frame.flat {
     border-style: none; }
   frame > border:backdrop,
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index c0f4369..7830a16 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -3820,7 +3820,7 @@ frame > border,
   padding: 0;
   border-radius: 0;
   border: 1px solid #b6b6b3; }
-  frame > border.flat,
+  frame.flat > border,
   .frame.flat {
     border-style: none; }
   frame > border:backdrop,
diff --git a/gtk/theme/HighContrast/gtk-contained-inverse.css 
b/gtk/theme/HighContrast/gtk-contained-inverse.css
index da9ab5b..0a6dea1 100644
--- a/gtk/theme/HighContrast/gtk-contained-inverse.css
+++ b/gtk/theme/HighContrast/gtk-contained-inverse.css
@@ -2616,7 +2616,7 @@ frame border,
 .frame {
   border: 1px solid gray;
   padding: 0; }
-  frame border.flat,
+  frame.flat > border,
   .frame.flat {
     border-style: none; }
   frame border:backdrop,
diff --git a/gtk/theme/HighContrast/gtk-contained.css b/gtk/theme/HighContrast/gtk-contained.css
index 045cc08..8adbd5a 100644
--- a/gtk/theme/HighContrast/gtk-contained.css
+++ b/gtk/theme/HighContrast/gtk-contained.css
@@ -2623,7 +2623,7 @@ frame border,
 .frame {
   border: 1px solid gray;
   padding: 0; }
-  frame border.flat,
+  frame.flat > border,
   .frame.flat {
     border-style: none; }
   frame border:backdrop,