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

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https://hg.mozilla.org/integration/gaia-central/rev/8270d650d4dd
Author: Sam Joch <samuel@guiora.com>
Desc: Merge pull request #10006 from pivanov/bug-835842

Bug 835842 - [Calendar UX VD] Use BB for Tabs, the have wrong hit state and odd style r=samjoch

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https://hg.mozilla.org/integration/gaia-central/rev/9d3242356641
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 835842 - [Calendar UX VD] Use BB for Tabs, the have wrong hit state and odd style
Bumping gaia.json for 3 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/33a955c63480
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #12789 from viorelaioia/bug-924946

Bug 924946 - Change test_ftu_with_tour so it can work on desktopb2g

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https://hg.mozilla.org/integration/gaia-central/rev/823db7efd3b4
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 924946 - Change test_ftu_with_tour so it can work on desktopb2g

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https://hg.mozilla.org/integration/gaia-central/rev/3b4223fc6fa9
Author: Gabriele Svelto <gabriele.svelto@gmail.com>
Desc: Bug 915074 - Adjust the text size to make it entirely visible r=etienne
Bug 789217 - 0001. Add skeleton for keystore. r=khuey
Bug 789217 - 0002. Implement keystore. r=qdot
Bug 789217 - 0003. Bring up keystore. r=khuey
Bug 923173 - Use NS_WARNING for unexpected name to avoid crashing. r=ehsan
Bug 924787 - [AudioManager] The checking condition should be "leave here if settings name is not for bt_sco". r=mwu
Bug 923848 - Reuse mp3 file format check result. r=doublec