Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/afc55ca..49ce9a3

TBR=machenbach@chromium.org,tmrts@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: I70102bf08d91bdc1503e1dd8160dbee9b252bf7a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2553924Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#71328}