GitLab

The transactionId field is now required in the WebIDL, so the proper
error is now a TypeError.

Bug: 803494
Change-Id: Iaf49c2cd192b8ac99678acb74a163670f4c93893
Reviewed-on: https://chromium-review.googlesource.com/1163666
Commit-Queue: Florent Castelli <orphis@chromium.org>
Reviewed-by: Henrik Boström <hbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580887}