Essentially this does activate auto-correction with a hardware
keyboard, although a lot of things are still left to implement.
No proximity is used yet which means only missing and excessive
letters are considered. Dead keys are not handled. No combiner
is supported. No suggestions are displayed. Resuming suggestions
does not work correctly with a hardware key (because the view
holds a temporary hardware event 'onKeyPreIme' and the event
from the IME won't be handled until this is handled which won't
happen until after the IME said that it did handle the event).

Bug: 5037589
Change-Id: Idcb5c7b26d56717ed772d53c062362807f11cdae