Create ContactInfoCache from CallLogAdapter.

This pulls code from the CallLogAdapter, with only tweaks to variable
names and comments, to create a ContactInfoCache responsible for logic
pertaining to looking up and caching contact info.

The logic is intended to be unchanged for now, although in the future
it can/should probably be cleaned up sometime.

Bug: 20038300
Change-Id: I60a57b0a665496522a6b51c9e6e41a4fd6dbad1f