This is a followup to bug 1562057. On Android, we apparently still render intrinsically-sized <select> elements as being too skinny if they have contain:size. (They're supposed to be sized as if they were empty, but in fact we size them a little smaller.)

Failure log:
https://treeherder.mozilla.org/logviewer.html#/jobs?job_id=270910342&repo=autoland&lineNumber=7395

Snippet of log (for reftest-analyzer) attached.

This causes reftest https://searchfox.org/mozilla-central/source/layout/reftests/w3c-css/submitted/contain/contain-size-select-elem-002.html to be expected-fail on Android for now.

This bug is also tracking Android-only expected-failures in the similarly-named "contain-size-select-001.html" and -002.html (no "elem" in these tests' names)

Log from autoland with those tests' failures (when they were briefly annotated as expected-pass):
https://treeherder.mozilla.org/#/jobs?repo=autoland&revision=a8ea98346a87402b1c3ad4c892694d0de163a0b3&selectedJob=270910351

Bug 1619428 drive-by fixes this.