Roll src/third_party/angle a14555a7928f..9a334fdadf3f (2 commits)

https://chromium.googlesource.com/angle/angle.git/+log/a14555a7928f..9a334fdadf3f

git log a14555a7928f..9a334fdadf3f --date=short --no-merges --format='%ad %ae %s'
2019-10-16 jmadill@chromium.org Delete README.angle from googletest.
2019-10-16 timvp@google.com Vulkan: Mark destination buffers dirty after a copy

Created with:
  gclient setdep -r src/third_party/angle@9a334fdadf3f

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 jmadill@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_optional_gpu_tests_rel
TBR=jmadill@google.com

Bug: None
Change-Id: I1753a2b13d9540e2002e195a310a98d685499be9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1865440Reviewed-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@{#706586}

DEPS

@@ -179,7 +179,7 @@ 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': 'a14555a7928f33097c7e6c811cdb2563a4462801',
+  'angle_revision': '9a334fdadf3f74db751a6593e01738f2e7b8caa4',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.