Roll src/third_party/angle c73475fb3c99..4dc1eb42a4de (4 commits)

https://chromium.googlesource.com/angle/angle.git/+log/c73475fb3c99..4dc1eb42a4de

git log c73475fb3c99..4dc1eb42a4de --date=short --first-parent --format='%ad %ae %s'
2020-01-31 ynovikov@chromium.org Add UWP builders to CQ
2020-01-31 jgilbert@mozilla.com Allow overriding ANGLE_PLATFORM_EXPORT.
2020-01-31 cclao@google.com Vulkan: Disable restartRenderPassAfterLoadOpClear workaround
2020-01-31 cnorthrop@google.com Capture/Replay: Implement Manhattan ES 3.0 support

Created with:
  gclient setdep -r src/third_party/angle@4dc1eb42a4de

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 tobine@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: tobine@google.com
Change-Id: I476f7b9130978a6dfacbd1318beb1f4d61ed8d3e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2033423Reviewed-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@{#737493}

DEPS

@@ -189,7 +189,7 @@ 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': 'c73475fb3c999967b504dc7c117d650669f09e4b',
+  'angle_revision': '4dc1eb42a4de62eac264cd880bb7aa92b07ca203',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.