diff -r 000000000000 -r 6474c204b198 mobile/android/themes/core/browser.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/themes/core/browser.css	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+/* 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/. */
+
+/**
+ * Optimization for tabs that are restored lazily. We can save a good amount of
+ * memory that to-be-restored tabs would otherwise consume simply by setting
+ * their browsers to 'display: none' as that will prevent them from having to
+ * create a presentation and the like.
+ */
+browser[pending] {
+  display: none;
+}