Rolling v8/test/test262/data: https://chromium.googlesource.com/external/github.com/tc39/test262/+log/6c2503a..9bddfae

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

Change-Id: I55dc31096a88cb0663bc87f53939c35e3c6422c2
Reviewed-on: https://chromium-review.googlesource.com/1112913Reviewed-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@{#53989}