This includes three minor updates to generated CSS files:
- A single `-webkit-` prefix is removed for `min-width`, which was required for Safari <= 10.1 (0.06% total global usage). WordPress only supports the last two versions.
- 2 instances where the `-o-` prefix are added for `tab-size`. This appears to be for Opera Mobile, which has creeped back over the 1% global usage.
Props peterwilsoncc, jorbin.
Fixes#53686.
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git-svn-id: http://core.svn.wordpress.org/trunk@51067 1a063a9b-81f0-0310-95a4-ce76da25c4cd
