Performance and stability improvements on all platforms.

TBR=v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com

Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: If5c44960f22469a83b6911f0cc4e1fc04ec39feb
Reviewed-on: https://chromium-review.googlesource.com/1134873
Reviewed-by: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/6.9.360@{#1}
Cr-Branched-From: 7971f9d6f747708b2847aa5a485cbff1f7a446ea-refs/heads/master@{#54393}