This CL does not change existing behavior but only renames
notifyTextCommitted with notifyUserAction so that we can use
not only text commit but also other actions such as just typing
a character will be used as a trigger to update the IME
rotation order for better IME switching experience.
BUG: 7043015
Change-Id: I7f3e13a7226ef0dceee82b67e8a0d8536f7e9807