Chrome Version: 61.0.3143.0 (Developer build)
OS: 

What steps will reproduce the problem?
(1) Do a debug build
(2) Run http://googlechrome.github.io/web-audio-samples/samples/audio/wavetable-synth.html
(3)

What is the expected result?

Plays nicely

What happens instead?

Crashes on a NOTREACHED() assert.

This was introduced in refactoring the convolver node to support the new spec that was done some time ago.  Not sure why the release build doesn't just produce silence since the NOTREACHED() is followed by a zeroing of the output in this case.