[gnome-themes-standard] dialog buttons backdrop state fix

[Lapo Calamandrei <lapo src gnome org>]

commit eb822a3ffb838d99f08434cf9562ea9c9e73b91d
Author: Lapo Calamandrei <calamandrei gmail com>
Date:   Mon Jun 9 22:46:18 2014 +0200

    dialog buttons backdrop state fix

 themes/Adwaita/gtk-3.0/_common.scss           |    7 ++++++-
 themes/Adwaita/gtk-3.0/gtk-contained-dark.css |   16 ++++++++++++++++
 themes/Adwaita/gtk-3.0/gtk-contained.css      |   16 ++++++++++++++++
 3 files changed, 38 insertions(+), 1 deletions(-)
---
diff --git a/themes/Adwaita/gtk-3.0/_common.scss b/themes/Adwaita/gtk-3.0/_common.scss
index 119afea..2d2e726 100644
--- a/themes/Adwaita/gtk-3.0/_common.scss
+++ b/themes/Adwaita/gtk-3.0/_common.scss
@@ -1390,7 +1390,12 @@ GtkMessageDialog .titlebar {
       @include button(insensitive, $noedge: true);
       @extend %middle_button;
     }
-    &:backdrop, &:backdrop:insensitive {
+    &:backdrop {
+      @include button(backdrop, $noedge: true);
+      @extend %middle_button;
+    }
+    &:backdrop:insensitive {
+      @include button(backdrop-insensitive, $noedge: true);
       @extend %middle_button;
     }
     &:first-child{ @extend %first_button; }
diff --git a/themes/Adwaita/gtk-3.0/gtk-contained-dark.css b/themes/Adwaita/gtk-3.0/gtk-contained-dark.css
index 8c907a5..6fd7e7d 100644
--- a/themes/Adwaita/gtk-3.0/gtk-contained-dark.css
+++ b/themes/Adwaita/gtk-3.0/gtk-contained-dark.css
@@ -1612,6 +1612,22 @@ GtkMessageDialog .titlebar {
     text-shadow: none;
     icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0); }
+  .dialog-action-area.linked .button:backdrop {
+    border-width: 1px;
+    border-style: solid;
+    color: #c9cbc9;
+    border-color: #1c1f1f;
+    background-image: linear-gradient(to bottom, #393f3f);
+    text-shadow: none;
+    icon-shadow: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
+  .dialog-action-area.linked .button:backdrop:insensitive {
+    border-width: 1px;
+    border-style: solid;
+    color: #454c4c;
+    border-color: #1c1f1f;
+    background-image: linear-gradient(to bottom, #393f3f);
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0); }
 .dialog-action-area.linked .button, .dialog-action-area.linked .button:hover, .dialog-action-area.linked 
.button:active, .dialog-action-area.linked .button:insensitive, .dialog-action-area.linked .button:backdrop, 
.dialog-action-area.linked .button:backdrop:insensitive {
   border-style: solid none none solid; }
 .dialog-action-area.linked .button:first-child {
diff --git a/themes/Adwaita/gtk-3.0/gtk-contained.css b/themes/Adwaita/gtk-3.0/gtk-contained.css
index 4914ff0..d6eb94d 100644
--- a/themes/Adwaita/gtk-3.0/gtk-contained.css
+++ b/themes/Adwaita/gtk-3.0/gtk-contained.css
@@ -1612,6 +1612,22 @@ GtkMessageDialog .titlebar {
     text-shadow: none;
     icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0); }
+  .dialog-action-area.linked .button:backdrop {
+    border-width: 1px;
+    border-style: solid;
+    color: #54595a;
+    border-color: #a1a1a1;
+    background-image: linear-gradient(to bottom, #ededed);
+    text-shadow: none;
+    icon-shadow: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
+  .dialog-action-area.linked .button:backdrop:insensitive {
+    border-width: 1px;
+    border-style: solid;
+    color: #c7c7c7;
+    border-color: #a1a1a1;
+    background-image: linear-gradient(to bottom, #ededed);
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0); }
 .dialog-action-area.linked .button, .dialog-action-area.linked .button:hover, .dialog-action-area.linked 
.button:active, .dialog-action-area.linked .button:insensitive, .dialog-action-area.linked .button:backdrop, 
.dialog-action-area.linked .button:backdrop:insensitive {
   border-style: solid none none solid; }
 .dialog-action-area.linked .button:first-child {