Roll ANGLE from 25b0de6bd00f to 38ddebf9a771 (2 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/25b0de6bd00f..38ddebf9a771

2020-08-05 angle-autoroll@skia-public.iam.gserviceaccount.com Roll SPIRV-Tools from 92a71657fcba to 8bc27a1cfbc1 (3 revisions)
2020-08-05 timvp@google.com Roll chromium_revision fb6cbaf6..ed7912a2 (790363:794870)

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 geofflang@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: geofflang@google.com
Change-Id: I87ed52cea1268c12802ae07839751e1e4db4effe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2338258Reviewed-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@{#794969}

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': '25b0de6bd00fc23973b6b23bab61c83c589f2b06',
+  'angle_revision': '38ddebf9a771aef3a906667595354c7a564edf31',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.