Revert "Roll ANGLE from fd7733e97423 to cb8903b14336 (1 revision)"

This reverts commit 3909caf2.

Reason for revert: Broke TestSuiteTest.RunFlakyTests and . RunMockTests, see crbug.com/1158815

Original change's description:
> Roll ANGLE from fd7733e97423 to cb8903b14336 (1 revision)
>
> https://chromium.googlesource.com/angle/angle.git/+log/fd7733e97423..cb8903b14336
>
> 2020-12-15 lehoangq@gmail.com Metal: Ignore OS's internal shader cache when testing.
>
> If this roll has caused a breakage, revert this CL and stop the roller
> using the controls here:
> https://autoroll.skia.org/r/angle-chromium-autoroll
> Please CC cwallez@google.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://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug
>
> Documentation for the AutoRoller is here:
> https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md
>
> Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win-asan;luci.chromium.try:win_optional_gpu_tests_rel;luci.chromium.try:linux-swangle-try-x64;luci.chromium.try:win-swangle-try-x86
> Bug: None
> Tbr: cwallez@google.com
> Change-Id: I21b81c00947e5964d12841f6334bc1e5cf3f6bd6
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2592058
> Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
> Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
> Cr-Commit-Position: refs/heads/master@{#836969}

TBR=cwallez@google.com,chromium-autoroll@skia-public.iam.gserviceaccount.com,chromium-scoped@luci-project-accounts.iam.gserviceaccount.com

Change-Id: I88ba1edfa0ddbfc60cbc7c3ec742f8c5263d107f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: None
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win-asan;luci.chromium.try:win_optional_gpu_tests_rel;luci.chromium.try:linux-swangle-try-x64;luci.chromium.try:win-swangle-try-x86
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2593099Reviewed-by: Marc Treib <treib@chromium.org>
Commit-Queue: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#837093}

DEPS

@@ -211,7 +211,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
-  'angle_revision': '1bfc1c90a14685dd8f50f07326660e5c08e8f6d1',
+  'angle_revision': 'fd7733e974236d34b822c36becc965b8d3414f08',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.