The Action API is going to need to convert between the two at various
boundaries where it receives a Status from business logic.
Also when we make HtmlFormatter and the like, that'll initially need the
same conversion logic too.
Change-Id: Id5b216b033718f3ef38bfd4be1715218ee07bb93
Fixes an overstrict test in ListParam, and has TextFormatter convert
to Message recursively where necessary.
Change-Id: I387754b6857fbdeedea6afd222a2fdba1ebe1a9c
An injectable service interface for message formatting, somewhat
narrowed compared to Message.
Only the text format is implemented in this framework so far, with
getTextFormatter() returning a formatter that converts to the text
format. Other formatters could be added to MessageFormatterFactory.
Bug: T226598
Change-Id: Id053074c1dbcb692e8309fdca602f94a385bca0c
