1869423 - Use `nsIWindowsRegKey` rather than `Reg*` Windows APIs in WDBA (`toolkit/mozapps/defaultagent`)

Status: NEW

(Toolkit :: Default Browser Agent, enhancement, P3)

Description

[Nick Alexander :nalexander [he/him] (PTO Feb 24-March 3)]

This ticket tracks replacing the existing Windows APIs with nsIWindowsRegKey and friends in the WDBA. This is both more friendly as we transition to a JS implementation and should allow to mock the registry using MockRegistry and MockRegistrar, letting us test much more of the relevant functionality.

Comment 1

[Nick Alexander :nalexander [he/him] (PTO Feb 24-March 3)]

Attachment: WIP: Bug 1869423 - Use `nsIWindowsRegKey` rather than `Reg*` Windows APIs in WDBA. r?nrishel

This is just some WIP -- replacing the implementation without changing
the internal API layer. The key point is that we should be able to
use a MockRegistry, augmented with an audit log, to verify exactly
what the WDBA does with particular registry configurations.

Depends on D199436