Roll ANGLE from 4c6903a455df to df6b7298bb41 (1 revision)

https://chromium.googlesource.com/angle/angle.git/+log/4c6903a455df..df6b7298bb41

2020-10-13 cclao@google.com Vulkan: Use StoreOp_None_QCOM for read only depth stencil buffer

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@chromium.org 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@chromium.org
Change-Id: Iee16f2105cf3d71b72a8255bb91d5238f26ecd31
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2464695Reviewed-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@{#816479}

DEPS

@@ -203,7 +203,7 @@ 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': '4c6903a455dfa3b2f3f822b1757f2e268b91b477',
+  'angle_revision': 'df6b7298bb4129bf267fcb4d267ae84676bfd798',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.