Replace application/basilisk with browser/

browser/themes/shared/controlcenter/arrow-subview-back.svg

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 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/. -->
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+#include ../icon-colors.inc.svg
+  <polygon class="highlighttext" points="12,3.5 10.5,2 4.625,8 10.5,14 12,12.5 7.625,8"/>
+</svg>