Roll ANGLE from fb35201abbd0 to 2ec7d750992a (2 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/fb35201abbd0..2ec7d750992a

2020-12-30 penghuang@chromium.org Disable null backend on Android
2020-12-30 jdarpinian@chromium.org iOS sRGB mipmap generation is broken too

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 jonahr@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: chromium:1161513
Tbr: jonahr@google.com
Change-Id: I7f7fa6d36cd9f0036c846d711fe3aa532690c5e0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2607719Reviewed-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@{#839844}

DEPS

@@ -211,7 +211,7 @@ 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': 'fb35201abbd00649adfcca0e75e48312597ff007',
+  'angle_revision': '2ec7d750992a65ec8d1eed6af836f563002b299c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.