Bug 1516536 - Replace toolkit/themes/osx/global/arrow/arrow-dn{,-dis}.png with arrow-dropdown-12.svg. r=dao

toolkit/themes/osx/global/jar.mn

@@ -33,10 +33,8 @@ toolkit.jar:
   skin/classic/global/wizard.css
 * skin/classic/global/alerts/alert.css                               (alerts/alert.css)
   skin/classic/global/arrow/arrow-dn-dis.gif                         (arrow/arrow-dn-dis.gif)
-  skin/classic/global/arrow/arrow-dn-dis.png                         (arrow/arrow-dn-dis.png)
   skin/classic/global/arrow/arrow-dn-sharp.gif                       (arrow/arrow-dn-sharp.gif)
   skin/classic/global/arrow/arrow-dn.gif                             (arrow/arrow-dn.gif)
-  skin/classic/global/arrow/arrow-dn.png                             (arrow/arrow-dn.png)
   skin/classic/global/arrow/arrow-lft-dis.gif                        (arrow/arrow-lft-dis.gif)
   skin/classic/global/arrow/arrow-lft-sharp.gif                      (arrow/arrow-lft-sharp.gif)
   skin/classic/global/arrow/arrow-rit-dis.gif                        (arrow/arrow-rit-dis.gif)

toolkit/themes/osx/global/toolbarbutton.css

@@ -27,15 +27,13 @@ toolbarbutton[disabled="true"] {
 
 .toolbarbutton-menu-dropmarker {
   -moz-appearance: none;
-  list-style-image: url("chrome://global/skin/arrow/arrow-dn.png");
+  list-style-image: url("chrome://global/skin/icons/arrow-dropdown-12.svg");
+  -moz-context-properties: fill;
+  fill: currentColor;
   padding-inline-start: 2px;
   width: auto;
 }
 
-.toolbarbutton-menu-dropmarker[disabled="true"] {
-  list-style-image: url("chrome://global/skin/arrow/arrow-dn-dis.png");
-}
-
 /* ::::: toolbarbutton badged ::::: */
 
 .toolbarbutton-badge {