Use std::shared_ptr for InputChannel

Modernize the code by moving away from RefBase.
We can further improve this by switching to unique_ptr in some places.
Current refactor is to get off of RefBase only.

Test: interact with cf after device boots
Bug: 142581626
Change-Id: Ib90fc721970113310b87411bcc2ba62e30ddfd01
23 files changed