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

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https://hg.mozilla.org/integration/gaia-central/rev/f441f2e998fa
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #13604 from snowmantw/issue937023

Bug 937023 - [v1.2] Remove transparent to blue transition of lock screen handle and animation after unlock, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/2842965b15de
Author: Greg Weng (snowmantw) <gweng@mozilla.com>
Desc: Bug 937023 - Cancel the animation after unlock

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https://hg.mozilla.org/integration/gaia-central/rev/433fe078e66e
Author: Greg Weng (snowmantw) <gweng@mozilla.com>
Desc: Bug 937023 - [v1.2] Remove transparent to blue transition of lock screen handle to workaround bug 919899 and performance issues