am 857b0f4e: am ccbb7447: Merge "Grey out merge button after it is clicked." into lmp-mr1-dev

* commit '857b0f4e39bdc765ce294fd7ee8a1ef8290f679a':
  Grey out merge button after it is clicked.
tree: 981b58c8c5f53104ee9729023da7cca5a4a220b2
  1. InCallUI/