Summary:
Ref T11114. This creates `differential.revision.edit` (a modern, v3 API method) and redefines the existing methods in terms of it.
Both `differential.createrevision` and `differential.updaterevision` are now internally implemented by building a `differential.revision.edit` API call and then executing it.
I //think// this covers everything except custom fields, which need some tweaking to work with EditEngine. I'll clean that up in the next change.
Test Plan:
- Created, updated, and edited revisions via `arc`.
- Called APIs manually via test console.
- Stored custom fields ("Blame Rev", "Revert Plan") aren't exposed yet.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11114
Differential Revision: https://secure.phabricator.com/D17067
