[CB06] Fix a design error.

The event interpreter should intervene later, after decoding.
Decoding should happen first, and then the Event should
be passed to the InputLogic.

For the time being, we will leave the (unused) EventInterpreter
class and its friends, because we'll use them again later.

Bug: 13406701
Change-Id: I7582d486724311e39e6692e606cca50c78800643