InCallUI: Port "Add to blacklist" support to in-call ui (1 of 2)

Change-Id: I3f9777c112a4d25499b474762f83d187782c6ca0
Revert "InCallUI: Port "Add to blacklist" support to in-call ui (1 of 2)"

This reverts commit a3a1f4fc93cf9f31295592a83a308397b3739ca6.