Revert "Update V8 to version 8.8.64."

This reverts commit 3d00c8a1.

Reason for revert: Likely causes webgl2_conformance_gl_passthrough_tests to fail.
Example builds are:
* https://ci.chromium.org/p/chromium/builders/ci/Linux%20FYI%20Release%20%28NVIDIA%29/19363
* https://ci.chromium.org/p/chromium/builders/ci/Mac%20FYI%20Retina%20Release%20(AMD)/23905

Original change's description:
> Update V8 to version 8.8.64.
>
> Summary of changes available at:
> https://chromium.googlesource.com/v8/v8/+log/07b0b1dc..e4ed803f
>
> Please follow these instructions for assigning/CC'ing issues:
> https://v8.dev/docs/triage-issues
>
> Please close rolling in case of a roll revert:
> https://v8-roll.appspot.com/
> This only works with a Google account.
>
> CQ_INCLUDE_TRYBOTS=luci.chromium.try:linux-blink-rel
> CQ_INCLUDE_TRYBOTS=luci.chromium.try:linux_optional_gpu_tests_rel
> CQ_INCLUDE_TRYBOTS=luci.chromium.try:mac_optional_gpu_tests_rel
> CQ_INCLUDE_TRYBOTS=luci.chromium.try:win_optional_gpu_tests_rel
> CQ_INCLUDE_TRYBOTS=luci.chromium.try:android_optional_gpu_tests_rel
>
> TBR=hablich@chromium.org,vahl@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com
>
> Change-Id: Ifcadac29a122c1a22c5ab749e372d066e09aceee
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2463662
> Reviewed-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@{#815717}

TBR=hablich@chromium.org,v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com,vahl@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: I15080d2e1e2e1c64ab8e631c4f8998be7fa0f4a6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Cq-Include-Trybots: luci.chromium.try:linux_optional_gpu_tests_rel
Cq-Include-Trybots: luci.chromium.try:mac_optional_gpu_tests_rel
Cq-Include-Trybots: luci.chromium.try:win_optional_gpu_tests_rel
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2464150Reviewed-by: Haiyang Pan <hypan@google.com>
Commit-Queue: Haiyang Pan <hypan@google.com>
Cr-Commit-Position: refs/heads/master@{#815826}

DEPS

@@ -199,7 +199,7 @@ 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': 'e4ed803f4c09ff72bb1eaadf59ec31facf507368',
+  'v8_revision': '07b0b1dcde4a99294b8028d83f4ea244885cc091',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.