[gtk+] HighContrast: Avoid resizing treeview headers

[Matthias Clasen <matthiasc src gnome org>]

commit ba45fa09b49b54b5d5d50b17cb14fc8408571356
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Aug 3 22:16:34 2015 -0400

    HighContrast: Avoid resizing treeview headers
    
    https://bugzilla.gnome.org/show_bug.cgi?id=753060

 gtk/theme/HighContrast/_common.scss |    2 ++
 gtk/theme/HighContrast/gtk.css      |    2 ++
 2 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gtk/theme/HighContrast/_common.scss b/gtk/theme/HighContrast/_common.scss
index 07ead10..893d0ef 100644
--- a/gtk/theme/HighContrast/_common.scss
+++ b/gtk/theme/HighContrast/_common.scss
@@ -1063,6 +1063,7 @@ column-header {
   border-color: $bg_color;
   text-shadow: none;
   &:insensitive {
+    border-width: 0 1px 1px 0;
     border-color: $bg_color;
     background-image: none;
   }
@@ -1072,6 +1073,7 @@ column-header {
     color: mix($backdrop_fg_color, $backdrop_bg_color,50%);
     background-image: none;
     &:insensitive {
+      border-width: 0 1px 1px 0;
       border-color: $backdrop_bg_color;
       background-image: none;
     }
diff --git a/gtk/theme/HighContrast/gtk.css b/gtk/theme/HighContrast/gtk.css
index 6152865..1d4b653 100644
--- a/gtk/theme/HighContrast/gtk.css
+++ b/gtk/theme/HighContrast/gtk.css
@@ -1277,6 +1277,7 @@ column-header .button, column-header .button:hover, column-header .button:active
   border-color: #fff;
   text-shadow: none; }
   column-header .button:insensitive {
+    border-width: 0 1px 1px 0;
     border-color: #fff;
     background-image: none; }
   column-header .button:backdrop {
@@ -1285,6 +1286,7 @@ column-header .button, column-header .button:hover, column-header .button:active
     color: #7f7f7f;
     background-image: none; }
     column-header .button:backdrop:insensitive {
+      border-width: 0 1px 1px 0;
       border-color: #fff;
       background-image: none; }