Bug 829513 - Too few tests are running on Mozilla-B2g18 branch. -- r=bhearsum
Part 3, properly turn off leopard tests, even from osx64 builders

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extra : rebase_source : b597828119806ce32262d0ed5e8824c45322c541
Bug 829513 - (Part 4) b2g18 does desktop builds as pgo, make tests aware of that fact. r=bhearsum
Too few tests are running on Mozilla-B2g18 branch

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extra : rebase_source : 506b9928181a4131f2048f03175cf8809b177032