Keep InCallUI in memory (3/3)

Build the dummy InCallUI apk

Change-Id: Idfb7fa760eacc8d6e46d50ce682fb06c0acfc8f4
Merge "Keep InCallUI in memory (3/3)" into kitkat
Merge commit '6e8054e474f2cec9da95897c1793cd789b6a4571' into kitkat