This is a reland of 9cde8808 now the the underlying
problem in Chromium is fixed by:
   https://chromium-review.googlesource.com/c/chromium/src/+/1301459

Original change's description:
> [Compile] Ensure we don't access the native context during bytecode finalization.
>
> Resets the isolate's context to nullptr in debug builds during bytecode finalization
> to ensure that we don't rely on the native context during context independent
> unoptimized compilation.
>
> BUG=chromium:898076, v8:8041
>
> Change-Id: Ifaa5006a7a3d31d7fbd535ebb63f8889c75526c4
> Reviewed-on: https://chromium-review.googlesource.com/c/1297961
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#56979}

TBR=leszeks@chromium.org

Bug: chromium:898076, v8:8041
Change-Id: I11904e19e843b0eadab698196ac1ef9c7aeec766
Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel; luci.chromium.try:linux_chromium_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/1301480Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57048}