Serializable EditResult will be required to save it for later use by
RevertedTagUpdateJob.
Additionally I decided to save the serialization format version in
case we want to modify it in the future.
Bug: T259732
Change-Id: I0cddc9c0439c8a59b5f66cea9e7db5bb151cb53b
EditResult is an immutable object created during a page update by
the PageUpdater using a builder object, the EditResultBuilder.
EditResult is a container for information on how the edit
interacted with the page and previous revisions. It also aims to
provide a standardized way of describing reverts and reverted
edits. It is as simple as possible, with no dependencies on the DB
or global variables. Most of the logic is encapsulated in the
builder.
PageUpdater::getEditResult() replaces the following methods:
* getOriginalRevisionId()
* getUndidRevisionId()
They are both available in the EditResult object.
PageUpdater::markAsRevert() replaces
PageUpdater::setUndidRevisionId()
Bug: T254074
Change-Id: Ie04c38043d9c295552e488109436ec1df20bb2ca
