Bug 885630: gecko configs for emulator-jb builds. r=aki DONTBUILD

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extra : transplant_source : 7%DE%0E%F6X%92%8F%E5n%F4%AA%82%3Fx%12%8A%09upK
Bug 895531 - Add support for webrtc pulseaudio backend on gonk, r=rjesup