1615025 - Log an error when the :screenshot command fails

Status: RESOLVED DUPLICATE of bug 766661

(DevTools :: Console, defect, P3)

Description

[Florens Verschelde :fvsch]

When using the :screenshot command, especially as :screenshot --fullpage on a long web page, the screenshot may fail because Firefox can't make a big enough canvas. See bug 766661 for details.

We should at least log an error in the Console, to warn users about this limitation.

There is some proof of concept code in this comment:
https://bugzilla.mozilla.org/show_bug.cgi?id=766661#c80

Some steps to reproduce a failing screenshot in:
https://bugzilla.mozilla.org/show_bug.cgi?id=766661#c79

Comment 1

[Nicolas Chevobbe [:nchevobbe]]

I think we can close this now that Bug 766661 landed