Roll ANGLE from 573931528077 to 5b4f6e3193cf (5 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/573931528077..5b4f6e3193cf

2020-08-19 jmadill@chromium.org Vulkan: Add overlay widget for RP buffer count.
2020-08-18 jmadill@chromium.org Feedback Loop Redesign 1/3: Framebuffer Serials.
2020-08-18 lehoangq@gmail.com Metal: autogen format caps from json
2020-08-18 jmadill@chromium.org Vulkan: Add DS ReadOnly mode to Framebuffer/RP caches.
2020-08-18 lehoangq@gmail.com Metal: Fix missing image view for texture from IOSurface.

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 cnorthrop@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: cnorthrop@google.com
Change-Id: If969d7b027c7a322ddc7d3fe0a1148745c8886e5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2363498Reviewed-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@{#799480}

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': '57393152807764df5f205cdada048c75769b56e3',
+  'angle_revision': '5b4f6e3193cf5fe2214c5c5b322940da243ce983',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.