Roll src/third_party/angle 7daf31d8029b..b1eb44bf8f33 (2 commits)

https://chromium.googlesource.com/angle/angle.git/+log/7daf31d8029b..b1eb44bf8f33

git log 7daf31d8029b..b1eb44bf8f33 --date=short --first-parent --format='%ad %ae %s'
2020-03-19 jmadill@chromium.org Track if a Texture is bound as a sampler.
2020-03-19 lexa.knyazev@gmail.com Refactor BitCount

Created with:
  gclient setdep -r src/third_party/angle@b1eb44bf8f33

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: I987dabe981bb42f8f4cd10dc1fef68cac89bbf15
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2110583Reviewed-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@{#751851}

DEPS

@@ -187,7 +187,7 @@ 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': '7daf31d8029b03d71f2e51288756c1f453fa429a',
+  'angle_revision': 'b1eb44bf8f33648b5194a71687cd087ec17cc990',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.