- 'let' instead of 'var', and prefer 'const'
 - Prefer for-of over indexed interation
 - Variable names should be 'camel-case' or
   all-caps snake-case.
 - Only one variable declaration per line

Change-Id: I645dd2333d6d9a993f24c29121f5f156249f1b71
Notry: true
Bug: v8:7327
Reviewed-on: https://chromium-review.googlesource.com/c/1405320
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58761}