GitLab

Use Maybe version of BooleanValue fallback for generated bindings.

Bug: v8:7786
Change-Id: I8cc17d532840caca2354d6a89be5abe952e47c4a
Reviewed-on: https://chromium-review.googlesource.com/1160201Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580137}