1451019 - Convert LongStringActor to protocol.js

Status: RESOLVED DUPLICATE of bug 1450977

(DevTools :: General, enhancement, P2)

Description

[Yulia Startsev [:yulia]]

As part of refactoring ObjectActor to protocol.js, we need to update LongStringActor. it is instantiated via: 
-> via createValueGrip, so similar to ObjectActor and PauseScopedObjectActor
-> StyleSheetActor.getText, NodeActor.getNodeValue, Device.getWallpaper/screenshotToDataURL
-> From many methods of WebConsoleActor, StorageActors

Comment 1

[Alexandre Poirot [:ochameau]]

Note that there already is a protocol.js version of LongStringActor:
  https://searchfox.org/mozilla-central/source/devtools/server/actors/string.js
So it is mostly about switching from LongStringActor from actors/object/long-string.js to this one.

bug 1450977 looks like a duplicated of this bug.
comment 0 helps identifying all the current usages of LongStringActor to be refactored.

Comment 2

[Nicolas Chevobbe [:nchevobbe]]

Marked as duplicate to Bug 1450977. I think there's even less places where the old actor is used now.