Android only pre-defines ANDROID but it seems Gecko converged on ANDROID. Nothing uses Android macro.
$ clang++80 -target armv7-none-linux-androideabi -dM -E -</dev/null | fgrep -i android
#define ANDROID 1
Before bug 1538474 media.av1.enabled was true on Android but not media.av1.use-dav1d. And bug 1536126 will disable RDD on Android which may affect security.
media.av1.enabled and media.av1.use-dav1d default to false in 67.0b18 and 68.0a1 (2019-05-07) builds for android-api-16. So, probably only a cosmetic/style issue.
There's a r+ patch which didn't land and no activity in this bug for 2 weeks.
:jbeich, could you have a look please?
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