Rolling v8/test/test262/data: https://chromium.googlesource.com/external/github.com/tc39/test262/+log/7dc9215..6c2503a

TBR=adamk@chromium.org,gsathya@chromium.org

Change-Id: I3570f7a9c1e553ea124eea3cf2381dd9a2659fef
Reviewed-on: https://chromium-review.googlesource.com/1111902Reviewed-by: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#53971}