Roll ANGLE from 0781b693fa2d to 49d9785e4224 (1 revision)

https://chromium.googlesource.com/angle/angle.git/+log/0781b693fa2d..49d9785e4224

2020-11-06 angle-autoroll@skia-public.iam.gserviceaccount.com Roll SPIRV-Tools from c2b2b5788575 to a61d07a72763 (3 revisions)

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 courtneygo@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: courtneygo@google.com
Change-Id: Ia25ed3e6ac64e844017f43e56e33e25e9c2d0dc4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2521209


Reviewed-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@{#824904}