Roll ANGLE from 1b436e07b1e0 to 5ec560fb8c75 (9 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/1b436e07b1e0..5ec560fb8c75

2020-09-21 jmadill@chromium.org Add restricted trace golden image script test.
2020-09-21 jmadill@chromium.org Trace/Replay: Reset replay after taking a screenshot.
2020-09-21 ianelliott@google.com Vulkan: Further refine invalidate for depth/stencil
2020-09-21 syoussefi@chromium.org Vulkan: Disallow loadOp=LOAD for MSRTT depth/stencil textures
2020-09-21 lehoangq@gmail.com Metal: Implement PBO.
2020-09-21 ianelliott@google.com Vulkan: Fix copy-paste error in hasCopyImageView
2020-09-21 lexa.knyazev@gmail.com Metal: Implement ASTC LDR support
2020-09-21 jmadill@chromium.org Vulkan: Optimize Attribute Change Perf (5/5)
2020-09-21 jmadill@chromium.org Fix early fragment tests optimization condition.

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
Test: Test: DrawCallPerfBenchmark.Run/vulkan_attrib_changeTest: Test: tested with trigger.py
Change-Id: Ia2ea153bd1ac41531cf7262318c035c033ca0688
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2422905Reviewed-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@{#809205}

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': '1b436e07b1e0db2153ee0d3cf664924604629f6f',
+  'angle_revision': '5ec560fb8c75b408dcf6b87858f4d007051560eb',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.