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This patch wires the kV8SharedArrayBufferConstructedWithoutIsolation
feature up to Blink's deprecation infrastructure, resulting in a console
warning on the one hand, and a deprecation report on the other.

Bug: 1168554
Change-Id: I129ef0fc85d6e57ecb5db7a8671d771556e9f375
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2640254
Commit-Queue: Mike West <mkwst@chromium.org>
Reviewed-by: Camille Lamy <clamy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845577}