Roll src/third_party/angle 07467b4acaa6..6b462120c6b7 (5 commits)

https://chromium.googlesource.com/angle/angle.git/+log/07467b4acaa6..6b462120c6b7

git log 07467b4acaa6..6b462120c6b7 --date=short --first-parent --format='%ad %ae %s'
2020-03-20 ynovikov@chromium.org Skip flaky SwANGLE end2end tests.
2020-03-20 geofflang@chromium.org Skip ExternalWrapTest on Ozone.
2020-03-20 m.maiya@samsung.com Vulkan: Implement EXT_shader_non_constant_global_initializers
2020-03-20 geofflang@chromium.org Implement gl[Get]MemoryObjectParameterivEXT
2020-03-20 geofflang@chromium.org Update conditions for exposing ASTC extensions.

Created with:
  gclient setdep -r src/third_party/angle@6b462120c6b7

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: chromium:1049218,chromium:1063462
Tbr: courtneygo@google.com
Change-Id: Ic32b1c2ca8be1a4ef68d0d5dd63abc76a820f7a8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2113140Reviewed-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@{#752266}

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': '07467b4acaa6f1d26210a4b8b326f6a7d7f5dfc5',
+  'angle_revision': '6b462120c6b7bc0067c353992d6505de4a39a010',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.