Roll src/third_party/angle 166875eb84cc..ce4918f18f73 (7 commits)

https://chromium.googlesource.com/angle/angle.git/+log/166875eb84cc..ce4918f18f73

git log 166875eb84cc..ce4918f18f73 --date=short --first-parent --format='%ad %ae %s'
2020-02-21 jmadill@chromium.org Vulkan: Sanitize Images & Buffers with non-zero values.
2020-02-20 spang@chromium.org Generate entrypoints for Fuchsia external objects extensions
2020-02-20 jmadill@chromium.org Vulkan: Add command stream diagnostics when graph is disabled.
2020-02-20 tobine@google.com Vulkan:Add FramebufferVk cache
2020-02-20 jmadill@chromium.org Vulkan: Enable FenceNV extension without graph.
2020-02-20 spang@chromium.org Add external object extensions for Fuchsia to GL API
2020-02-20 jmadill@chromium.org Vulkan: Make mapped memory available with graph disabled.

Created with:
  gclient setdep -r src/third_party/angle@ce4918f18f73

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 cwallez@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: cwallez@google.com
Change-Id: I7fbc16d657933d16eb876d190132ff58d7d909a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2067587Reviewed-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@{#743399}

DEPS

@@ -183,7 +183,7 @@ 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': '166875eb84cc758db8915798e9cf1cbda2eb5d79',
+  'angle_revision': 'ce4918f18f739961146a160ebcd910a58164fa84',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.