Roll V8 from c865296b1d4d to 9ef46a4d241e (2 revisions)

https://chromium.googlesource.com/v8/v8.git/+log/c865296b1d4d..9ef46a4d241e

2023-10-28 v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com Version 12.0.265
2023-10-28 v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com Update V8 DEPS (trusted)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/v8-chromium-autoroll
Please CC liviurau@google.com,machenbach@google.com,v8-waterfall-sheriff@grotations.appspotmail.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Cq-Include-Trybots: luci.chromium.try:linux-blink-rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel;luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:dawn-linux-x64-deps-rel
Change-Id: Id74c5f7be24b06fdbd2d3d8edef89f31874b03c6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4986922
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1216541}

DEPS

@@ -321,7 +321,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.
-  'v8_revision': 'c865296b1d4dd35e5bf04bc67eeac7d54c0bf961',
+  'v8_revision': '9ef46a4d241e4c3fbc3a75040efa396a9e631f9c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.