1512153 - Use ES Classes for protocol.js Actors

Status: NEW

(DevTools :: Framework, enhancement, P3)

Description

[Alexandre Poirot [:ochameau]]

Similarly to bug 1510949, we can convert all protocol.js Actors to use ES Classes.
It should be easier as there is no custom/preEvent special cases.
And it should help implementing actor inheritance for the target actors.

Comment 2

[Alexandre Poirot [:ochameau]]

In bug 1512154, I had to workaround the fact that Actors weren't using ES Classes yet.
Because of that I had to duplicate Pool's contructor into Actor.initialize method:
    // Repeat Pool.constructor here as we can't call it from initialize
    // This is to be removed once actors switch to es classes and are able to call
    // Actor's contructor.
    if (conn) {
      this.conn = conn;
    }
We should remember here to remove that and instead call super(conn) once initialize becomes Actor.constructor.