1275231 - Browser console should indicate e10s is turned on

Status: RESOLVED WONTFIX

(DevTools :: Console, enhancement)

Description

[:Gijs (he/him)]

Now that tab titles are no longer underlined, 'e10s' is no longer in titles, etc., it would be useful for debugging purposes if the browser indicated e10s is on/off in some way (notification bar, whatever).

Comment 1

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

We could put something in the window title of the browser console like "Browser Console - (e10s on)", how does that sound?

Comment 2

[:Gijs (he/him)]

(In reply to J. Ryan Stinnett [:jryans] (use ni?) from comment #1)
> We could put something in the window title of the browser console like
> "Browser Console - (e10s on)", how does that sound?

This would wfm.

Comment 3

[:Gijs (he/him)]

Per discussion on #fx-team, in e10s windows the tabs still have "- e10s" suffixes in their titles (mostly only visible in their tooltips). We're going to get rid of these indicators and the e10s preference when we head to general release (hopefully soon), so now doesn't seem like a good time to add another one. Additionally, it would actually be slightly tricky to implement correctly, because whether the browser console points to an e10s or non-e10s window can change (at least on Nightly) when closing an e10s window and having only a non-e10s window left.