Bug 864485 - 1/3: B2G Telephony - move to IPDL. Interface changes. sr=sicking, r=hsinyi,khuey
Bug 864485 - 2/3: DOM & IPC. r=khuey
Bug 864485 - 3/3: Gonk backend specific. r=hsinyi
Bumping gaia.json for 1 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/a9d916c3c684
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 891743 - Add voice privacy mode for CDMA