On android xul, we run with e10s and our reftest harness will setup the xul window to have the remote=true attribute. For native fennec we have the preference to turn on e10s set, but we don't read it. This means that reftest is still thinking we are remote, but in reality we are not. In trying to turn this off, I found that the 17 tests which pass normally on android xul and native now fail. There are only 4 tests which do pass: jpg-size-1x1.jpg jpg-size-6x6.jpg jpg-srgb-icc.jpg webcam-simulacrum.mjpg The log file showing this is here: http://people.mozilla.org/~jmaher/android_reftests/jpeg.log
these appear to be running fine in a more recent build.