diff -r 000000000000 -r 6474c204b198 browser/metro/theme/circularprogress.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/metro/theme/circularprogress.css	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+/* 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/. */
+
+%filter substitution
+%include defines.inc
+
+.circularprogressindicator-progressButton,
+.circularprogressindicator-progressRing,
+.circularprogressindicator-progressTrack,
+.circularprogressindicator-progressNotification {
+  margin: 0 @toolbar_horizontal_spacing@;
+}
+
+.circularprogressindicator-progressRing,
+.circularprogressindicator-progressTrack {
+  pointer-events:none;
+  position: absolute;
+}
+
+.circularprogressindicator-progressTrack {
+  width: 40px;
+  height: 40px;
+  background-repeat: no-repeat;
+  background-size: 40px 40px;
+  background-image: url(chrome://browser/skin/images/progresscircle-bg.png);
+}
+
+.circularprogressindicator-progressNotification {
+    width: 40px;
+    height: 40px;
+    background-image: url(chrome://browser/skin/images/navbar-download-finished.png);
+    visibility: hidden;
+}
+
+.circularprogressindicator-progressNotification.progressNotification-active {
+  visibility: visible;
+  opacity: 0;
+  transform: scale(2);
+  transition: opacity @metro_animation_duration@,
+              transform @metro_animation_duration@;
+}
+
+.circularprogressindicator-progressRing:not([progress]),
+.circularprogressindicator-progressRing[progress="100"],
+.circularprogressindicator-progressTrack:not([progress]),
+.circularprogressindicator-progressTrack[progress="100"] {
+  visibility: hidden;
+}