Roll ANGLE from 5ec560fb8c75 to 566821cb0e58 (3 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/5ec560fb8c75..566821cb0e58

2020-09-22 jmadill@chromium.org Suppress 3 more Intel/GL/Compute shader fails.
2020-09-22 lehoangq@gmail.com Metal: Disable unused attribute slots.
2020-09-22 syoussefi@chromium.org Vulkan: Use subpass to unresolve render-to-texture attachments

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 syoussefi@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: syoussefi@google.com
Change-Id: I32959d8df0fc8c3bf906a799a0a1cab9b12ec72e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2423262Reviewed-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@{#809255}

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': '5ec560fb8c75b408dcf6b87858f4d007051560eb',
+  'angle_revision': '566821cb0e582e585ade6ef62467b7b99bb67d3d',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.