Roll ANGLE from 5641e3c185a8 to 9c8da02650bc (4 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/5641e3c185a8..9c8da02650bc

2020-10-22 cnorthrop@google.com Revert "Tests: Add FIFA Mobile trace"
2020-10-22 syoussefi@chromium.org Vulkan: Validate SPIR-V transformer at link time
2020-10-22 xiaoxuan.liu@arm.com Fix end2end tests VertexAttribute* failure
2020-10-22 angle-autoroll@skia-public.iam.gserviceaccount.com Roll Vulkan-Loader from 970c132746b1 to 91ce213a1d88 (3 revisions)

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 jonahr@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: jonahr@google.com
Change-Id: Ibcd63dae3ab0e3cbf06da55b97e6e34d6635372d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2492566Reviewed-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@{#820011}

DEPS

@@ -218,7 +218,7 @@ 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': '5641e3c185a85c04f40441698d693773b1e9e808',
+  'angle_revision': '9c8da02650bc3c3f0e1add512a3ee8ca7ef67e96',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.