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This the Chromium side of adding usage counter for WASM language
features. It depends on https://chromium-review.googlesource.com/c/v8/v8/+/1186721

R=ahaas@chromium.org, rmcilroy@chromium.org

Bug: chromium:868844
Change-Id: I3e8ed00300a77e7d1f5a44a4ff30ad555051ca21
Reviewed-on: https://chromium-review.googlesource.com/1186726
Commit-Queue: Ben Titzer <titzer@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585794}