Bumping gaia.json for 3 gaia-central revision(s)
Truncated some number of revisions since the previous bump.

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https://hg.mozilla.org/integration/gaia-central/rev/8d9ae370cf54
Author: Chris AtLee <catlee@mozilla.com>
Desc: Bug 852321: Update xulrunner SDK to reduce download time. r=ochameau

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https://hg.mozilla.org/integration/gaia-central/rev/d4c0b3a4c08a
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #10446 from JonHylands/jhylands-876736-mms-reference-workloads-master

Bug 876736 - Added MMS reference workloads
r=julien

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https://hg.mozilla.org/integration/gaia-central/rev/9dc7e2327fcb
Author: Jon Hylands <jhylands@mozilla.com>
Desc: Bug 876736 - Added MMS reference workloads