Implement multi-SIM capabilities (2/6) [DO NOT MERGE]

Use new PhoneAccount & metadata APIs

Bug:16292368
Change-Id: Ia53fc2c94b45196fd0bbd3f1da0ca5565d22360a
(cherry picked from commit 264629ca27d9b830806a81f7fda4ee493fda8652)
3 files changed