diff -r 000000000000 -r 6474c204b198 toolkit/themes/osx/global/scrollbox.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/themes/osx/global/scrollbox.css	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,96 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
+ 
+/* Horizontal enabled */
+.autorepeatbutton-up[orient="horizontal"],
+.scrollbutton-up[orient="horizontal"] {
+  list-style-image: url("chrome://global/skin/arrow/arrow-lft-sharp.gif");
+  -moz-image-region: auto; /* cut off inheritance */
+}
+ 
+.autorepeatbutton-down[orient="horizontal"],
+.scrollbutton-down[orient="horizontal"] {
+  list-style-image: url("chrome://global/skin/arrow/arrow-rit-sharp.gif");
+  -moz-image-region: auto; /* cut off inheritance */
+}
+
+/* Horizontal disabled */
+.autorepeatbutton-up[orient="horizontal"][disabled="true"],
+.scrollbutton-up[orient="horizontal"][disabled="true"] {
+  list-style-image: url("chrome://global/skin/arrow/arrow-lft-dis.gif");
+  -moz-image-region: auto; /* cut off inheritance */
+}
+ 
+.autorepeatbutton-down[orient="horizontal"][disabled="true"],
+.scrollbutton-down[orient="horizontal"][disabled="true"] {
+  list-style-image: url("chrome://global/skin/arrow/arrow-rit-dis.gif");
+  -moz-image-region: auto; /* cut off inheritance */
+}
+
+/* Vertical enabled */
+.autorepeatbutton-up:not([orient="horizontal"]) {
+  padding-bottom: 5px;
+}
+
+.autorepeatbutton-down:not([orient="horizontal"]) {
+  padding-top: 5px;
+}
+
+.autorepeatbutton-up:not([orient="horizontal"]) > .autorepeatbutton-icon {
+  transform: rotate(-90deg);
+}
+
+.autorepeatbutton-down:not([orient="horizontal"]) > .autorepeatbutton-icon {
+  transform: rotate(90deg);
+}
+
+.scrollbutton-up {
+  list-style-image: url("chrome://global/skin/arrow/arrow-up-sharp.gif");
+  -moz-image-region: auto; /* cut off inheritance */
+}
+
+.scrollbutton-down {
+  list-style-image: url("chrome://global/skin/arrow/arrow-dn-sharp.gif");
+  -moz-image-region: auto; /* cut off inheritance */
+}
+
+/* Vertical disabled */
+.autorepeatbutton-up[disabled="true"]:not([orient="horizontal"]),
+.autorepeatbutton-down[disabled="true"]:not([orient="horizontal"]) {
+  -moz-image-region: rect(0, 27px, 10px, 18px);
+}
+
+.scrollbutton-up[disabled="true"] {
+  list-style-image: url("chrome://global/skin/arrow/arrow-up-dis.gif");
+  -moz-image-region: auto; /* cut off inheritance */
+}
+
+.scrollbutton-down[disabled="true"] {
+  list-style-image: url("chrome://global/skin/arrow/arrow-dn-dis.gif");
+  -moz-image-region: auto; /* cut off inheritance */
+}
+
+.scrollbutton-up > .toolbarbutton-text,
+.scrollbutton-down > .toolbarbutton-text {
+  display: none;
+}
+
+autorepeatbutton {
+  list-style-image: url("chrome://global/skin/menu/menu-arrow.png");
+  -moz-image-region: rect(0, 9px, 10px, 0);
+  -moz-box-align: center;
+  -moz-box-pack: center;
+  padding: 1px;
+}
+
+@media (min-resolution: 2dppx) {
+  autorepeatbutton > .autorepeatbutton-icon {
+    list-style-image: url("chrome://global/skin/menu/menu-arrow@2x.png");
+    -moz-image-region: rect(0, 18px, 20px, 0);
+    width: 9px;
+    height: 10px;
+  }
+}