These tests were marked as `fails-if(geckoview&&!webrender)`. They are
failing on geckoview because of bug 1558513: there is an offset
between the emojis in the test and reference images.
The reason that they were passing on webrender previously was because
the emojis weren't being drawn at all, so both the test and reference
images were blank. Bug 1562316 fixed the emojis being drawn with
webrender, but bug 1558513 remains (they are still offset).
Differential Revision: https://phabricator.services.mozilla.com/D40191
--HG--
extra : moz-landing-system : lando
