1578425 - Rename most "target" getters to "currentTarget"

Status: NEW

(DevTools :: Framework, task, P2)

Description

[Alexandre Poirot [:ochameau]]

In order to better align the fact that a given toolbox may have its top level target to change to another instance whenever the inspected target navigates to another process,
we should rename existing target attributes we have in the codebase to currentTarget.
But we should do that only if the JS Class the attribute is on can change to another target.
In a few places, like WebConsoleConnectionProxy, a given class instance is bound to only one target and will be destroyed if the related target is destroyed or navigates.

Here, this bug is specific to the Toolbox class and its target attribute:
https://searchfox.org/mozilla-central/rev/e04021f29e6d8a37753ba2b510432315ce05a8d7/devtools/client/framework/toolbox.js#478-485

Comment 1

[Alexandre Poirot [:ochameau]]

We may also rename the target gatter defined in each panel:
https://searchfox.org/mozilla-central/search?q=get+target&case=false&regexp=false&path=devtools%2Fclient

Comment 2

[Chris Peterson [:cpeterson]]

Tracking dt-fission-m2 bugs for Fission Nightly (M6)

Comment 3

[Chris Peterson [:cpeterson]]

Tracking dt-fission-m2-mvp bugs for Fission Nightly milestone (M6c)

Comment 4

[Neha Kochar [:neha]]

Bulk move of all dt-fission-m2-reserve bugs to Fission MVP milestone.

Comment 5

[Chris Peterson [:cpeterson]]

Moving old "dt-fission-m2-reserve" bugs to "dt-fission-future" because they don't block Fission MVP.