Explicitly enumerate permissions

- We need to ask for every permission without assuming that having one
  permission in the group means we have the rest.
- This CL has no impact on UX; it corrects the way Contacts app asks for
  permissions and will prevent a potential problem on Android O release.

Reference: https://docs.google.com/a/google.com/spreadsheets/d/15CMBC8K1heIoLhwksrf2o14j-jmVyRSF5rbx8UIj3K8/edit?usp=sharing

Bug 28532268

Change-Id: I9327cfcaf02d9b6d54c116e1c09da4019557b9fe