Masayuki Nakano 9ac857639c Bug 1460509 - part 1: Declare NS_ERROR_EDITOR_DESTROYED error code and add a check method to TextEditRules whether it can keep handling edit action at a moment r=m_kato
This patch defines NS_ERROR_EDITOR_DESTROYED error code as an editor module
specific error code.

And creates TextEditRules::CanHandleEditAction() to check if the instance
can keep handling edit action.

MozReview-Commit-ID: 4qECwNBO0yz

--HG--
extra : rebase_source : a925a9b6840d4d06e2792b9fe276e062288b0806
2018-04-24 15:23:01 +09:00
..