The Tor Browser: diff layout/reftests/reftest-sanity/test-pos-fixed-ref.html

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/layout/reftests/reftest-sanity/test-pos-fixed-ref.html	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,7 @@
     1.4 +<!DOCTYPE HTML>
     1.5 +<html reftest-viewport-w="200" reftest-viewport-h="100"
     1.6 +      reftest-displayport-w="200" reftest-displayport-h="100"
     1.7 +<body>
     1.8 +<div style="position:fixed;top:0px;width:100%;height:10px;background-color:green;"></div>
     1.9 +</body>
    1.10 +</html>

The Tor Browser / file diff

diff: layout/reftests/reftest-sanity/test-pos-fixed-ref.html

layout/reftests/reftest-sanity/test-pos-fixed-ref.html