Roll ANGLE from 9c37bbd3e5eb to 5276639d2789 (2 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/9c37bbd3e5eb..5276639d2789

2020-08-12 angle-autoroll@skia-public.iam.gserviceaccount.com Roll SPIRV-Tools from 8e1380996d6a to 13a65b1aee42 (4 revisions)
2020-08-12 angle-autoroll@skia-public.iam.gserviceaccount.com Roll Vulkan-ValidationLayers from fcfe5a3b19d5 to e930c45863c6 (7 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: Ia57d677ffdaa1caa43247da482c7e3f2e1666b74
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2351156Reviewed-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@{#797248}

DEPS

@@ -207,7 +207,7 @@ 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': '9c37bbd3e5ebeba57604d42d17d0199f1b271d6b',
+  'angle_revision': '5276639d27894f3f35c43af5f038bf84e3aafe9f',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.