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

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https://hg.mozilla.org/integration/gaia-central/rev/70630498ae2c
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #19849 from timdream/input-manage-transition

Bug 1017327 - Isolate keyboard transition management to another module, r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/6147617245ac
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1017327 - (Part II) Let KeyboardManager use it

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https://hg.mozilla.org/integration/gaia-central/rev/be5096ead476
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1017327 - (Part I) Implement InputAppsTransitionManager
Bumping manifests a=b2g-bump