Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/79826ac6e04a
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #25448 from alivedise/bugzilla/1074063_master/hide-browser-element-on-revive

Bug 1074063 - Hide browser iframe on reviving, r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/316c0c234255
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1074063 - Hide browser iframe on reviving
Bumping manifests a=b2g-bump