Bumping gaia.json for 3 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/4692988ee090
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #14105 from timdream/keyboard-current-settings-val

Bug 930402 - Set/remove keyboard.current in keyboard app, r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/46034ff1d3c2
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 930402 - Part II, set/remove keyboard.current in keyboard app

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https://hg.mozilla.org/integration/gaia-central/rev/c1353e8b3719
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 930402 - Part I, Small clean up on keyboard launch code