Upgrade the SwapsController to BaseControllerV2 (to support Amon Hen v2)

[desi]

[mcmire]

This controller doesn't use the messenger pattern currently, and doesn't appear to do anything non-conventional with state.

The tests do make use of the config method to change the controller after it's instantiated. This method won't exist after the upgrade, so we will need to go through each test and change how the controller is instantiated to match how we do it in other packages (i.e. use the setupController pattern).

So the biggest changes here should be to the tests.

[desi]

Closed - Work being picked up by the accounts team.

[legobeat]

@desi Did you mean to close this as "not planned" rather than "completed"?

Related:

• deps: @metamask/gas-fee-controller@^3.0.0->^12.0.0 #219

[MajorLift]

Closed by #280