Roll src/third_party/angle 0e069b42b334..12a1c373822e (2 commits)

https://chromium.googlesource.com/angle/angle.git/+log/0e069b42b334..12a1c373822e

git log 0e069b42b334..12a1c373822e --date=short --first-parent --format='%ad %ae %s'
2020-03-20 angle-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/spirv-tools/src 18d3896a15fc..60104cd97446 (2 commits)
2020-03-20 angle-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/SwiftShader bc98fbeec99b..1c9f24263e6c (2 commits)

Created with:
  gclient setdep -r src/third_party/angle@12a1c373822e

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/+/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
Bug: None
Tbr: courtneygo@google.com
Change-Id: I8c62e29a53fece57d300cf9e765399459c635ffd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2112394
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@{#751979}