Use boot properties, and webcam facing parameters set up by the emulator's cmdline. Change-Id: I2189e5f67b9d79ad330b5ee275ff30d8851fc326
Change-Id: Ifb5dd0b11bd616ef5a5a1e79b510b00f1d55672a
Change-Id: If57b536ae6b1f9bad4213630488591a3b3cc9fdd