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

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https://hg.mozilla.org/integration/gaia-central/rev/faa30b966159
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #16902 from zacc/bug_979843

Bug 979843 - Try run removing redundant switch_to_frame code in gaiatest...

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https://hg.mozilla.org/integration/gaia-central/rev/e006e7042a16
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Bug 979843 - Try run removing redundant switch_to_frame code in gaiatest.
Bumping manifests a=b2g-bump