Roll ANGLE from f9826008618a to 4a81e3dba0fd (3 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/f9826008618a..4a81e3dba0fd

2020-05-27 angle-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from 79dcb2a5abbd to 9e718f962f87 (1 revision)
2020-05-27 angle-autoroll@skia-public.iam.gserviceaccount.com Roll SPIRV-Tools from 9cb2571a184c to d3d89bb90cbd (2 revisions)
2020-05-27 angle-autoroll@skia-public.iam.gserviceaccount.com Roll Vulkan-Loader from 3e390a159761 to 006586926ade (2 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 ynovikov@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: ynovikov@google.com
Change-Id: I49ecb58d2dab2eac998c4cf60d9909b9e870dedb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2214050Reviewed-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@{#772222}

DEPS

@@ -190,7 +190,7 @@ 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': 'f9826008618a0899fc98582be824f212998850eb',
+  'angle_revision': '4a81e3dba0fd0d6e54987156486265f82e1382cd',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.