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: I91529c9581cd25090d65d386730a6e563654cb70
Reviewed-on: https://chromium-review.googlesource.com/1134878
Reviewed-by: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/6.9.362@{#1}
Cr-Branched-From: d20c14149cdc5c4222eec1b7ea4fc00607b9fada-refs/heads/master@{#54398}