diff -r 000000000000 -r 6474c204b198 layout/reftests/reftest-sanity/default-preferences-include.list
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/reftests/reftest-sanity/default-preferences-include.list	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+# test default-preferences on include commands
+
+# In default-preferences-tests.list, the default-preferences line in effect
+# before the include statement sets different font sizes for the test and
+# reference files. Those default preferences should not inherit into this file.
+== font-default.html font-default.html