Inject SelectionManager instead of passing on reset.

Move more delete functionality into ActionHandler.
Make ActionModeController Activity scoped.
Name most "Config" objects (relating to scope) to ContentScope.
Clear focus info when resetting FocusManager.

Bug: 31658228

Change-Id: I6dbdb07ded83c75b82aec5773a60ef0febb6f02c
27 files changed