Roll ANGLE from 8930f18245df to 777749aafaac (2 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/8930f18245df..777749aafaac

2020-11-20 b.schade@samsung.com Vulkan: Fix image copies with renderbuffers
2020-11-20 cnorthrop@google.com Capture/Replay: Limit GL_MAX_IMAGE_UNITS during capture

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
Test: Test: LEGO MECTest: Test: dEQP-GLES31.functional.copy_image.*renderbuffer*
Change-Id: Ief33c3f6274490f6a0be694310e2f904dbce2e37
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2551977Reviewed-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@{#829596}

DEPS

@@ -209,7 +209,7 @@ 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': '8930f18245df678abc944376372c77ba5e2a658b',
+  'angle_revision': '777749aafaac268b3468b551050f5bf4b28cf9b6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.