This is a reland of 524215be

Original change's description:
> Use new arraybuffer deleter interface in d8
> 
> With this cl we start using the custom deleter to free externalized
> array buffers. This also allows us to keep wasm memories registered
> with the wasm memory tracker and thereby to propagate that a memory
> is wasm allocated over postMessage calls.
> 
> Bug: v8:8073, chromium:836800
> Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
> Change-Id: I57e3ea44d9c6633ada7996677dd1de4da810ab64
> Reviewed-on: https://chromium-review.googlesource.com/1186681
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Commit-Queue: Stephan Herhut <herhut@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#55361}

Bug: v8:8073, chromium:836800
Change-Id: Ia3c057ced496363cfdd07eed16ed1d0c7a3f3084
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/1188222Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55389}