Bug 872701 - Add test that highp floats work iff GL gives a format for them. - r=bjacob
Bug 921239 - Mochitest-plain --repeat fails with PLAIN_LOOP_PATH not defined - r=jgriffin

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extra : rebase_source : 3815e9c97d56ba9027e2e36bd908722a03b836d0
Backed out changeset 24c2574041dd (bug 900954)