Chinese Location Lookup [2/2] Telephony: Detect external plugin.

Change-Id: I9ee3f925af09a5689ad7b72a2f1c2e1925fa3433
Mute phone when it is flipped over while ringing.

Change-Id: If7c2e64e002adbf5a3c8a16c6e6e7b7b6a86fbce