Roll src/third_party/angle c6db4a035a17..299bea643826 (1 commits)

https://chromium.googlesource.com/angle/angle.git/+log/c6db4a035a17..299bea643826

git log c6db4a035a17..299bea643826 --date=short --no-merges --format='%ad %ae %s'
2019-10-18 angle-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/glslang/src a959deb00750..834ee546f93d (1 commits)

Created with:
  gclient setdep -r src/third_party/angle@299bea643826

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: chromium:None
Change-Id: I84911c1413d43bcd9a33542136d4da8e0e8601e6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1868972Reviewed-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@{#707332}

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': 'c6db4a035a17fd50c40bdb547840e4d8d21595c2',
+  'angle_revision': '299bea6438264efdaaa3ece8e9aea09e6e6b2a74',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.