[gtk+] Adwaita: set -GtkRange-trough-border: 0 for scrollbars

[Lapo Calamandrei <lapo src gnome org>]

commit 50983101d4b721c4ab6ae9c2c76b420a23b8320b
Author: Lapo Calamandrei <calamandrei gmail com>
Date:   Tue Sep 8 22:12:12 2015 +0200

    Adwaita: set -GtkRange-trough-border: 0 for scrollbars
    
    which fixes firefox scrollbar not being fittsy when maximixed.

 gtk/theme/Adwaita/_common.scss           |    2 +-
 gtk/theme/Adwaita/gtk-contained-dark.css |    2 +-
 gtk/theme/Adwaita/gtk-contained.css      |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 45ce720..51b2be2 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -1845,7 +1845,7 @@ column-header.button.dnd { // for treeview-like derive widgets
 
 .scrollbar {
   -GtkRange-slider-width: 13;
-  -GtkRange-trough-border: 1;
+  -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
   -GtkScrollbar-has-forward-stepper: false;
   -GtkScrollbar-min-slider-length: 42; // minimum size for the slider.
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index 18ad2ae..792492c 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -2351,7 +2351,7 @@ column-header .titlebar .button.titlebutton,
  **************/
 .scrollbar {
   -GtkRange-slider-width: 13;
-  -GtkRange-trough-border: 1;
+  -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
   -GtkScrollbar-has-forward-stepper: false;
   -GtkScrollbar-min-slider-length: 42;
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index 2dd9544..c003c01 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -2357,7 +2357,7 @@ column-header .titlebar .button.titlebutton,
  **************/
 .scrollbar {
   -GtkRange-slider-width: 13;
-  -GtkRange-trough-border: 1;
+  -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
   -GtkScrollbar-has-forward-stepper: false;
   -GtkScrollbar-min-slider-length: 42;