GitLab

This virtual method is not needed.  The derived classes don't all
support this method, and indeed it is invalid for an
OfflineAudioContext because the offline context requires a time
argument.

Bug: 889694
Test: internal change
Change-Id: I9ee9aa6279693f90b4a91bfa34f3f584e5f3654d
Reviewed-on: https://chromium-review.googlesource.com/1247683Reviewed-by: Hongchan Choi <hongchan@chromium.org>
Commit-Queue: Raymond Toy <rtoy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#594809}