Roll src/third_party/angle 7f9c9a7fc001..dc98ca69edd0 (2 commits)

https://chromium.googlesource.com/angle/angle.git/+log/7f9c9a7fc001..dc98ca69edd0

git log 7f9c9a7fc001..dc98ca69edd0 --date=short --no-merges --format='%ad %ae %s'
2019-11-08 angle-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/glslang/src e471df3c9154..f34cdc70ca1b (2 commits)
2019-11-08 angle-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/SwiftShader 27a3d31d7a9d..d9ed1c2732ba (1 commits)

Created with:
  gclient setdep -r src/third_party/angle@dc98ca69edd0

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 jonahr@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=jonahr@google.com

Bug: chromium:None
Change-Id: I141a44b2fd130eb3b5970f14e07c19a2bf510ef8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1905281Reviewed-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@{#713792}

DEPS

@@ -184,7 +184,7 @@ 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': '7f9c9a7fc00143cb5ad26a0bb5cb6950db4a1e58',
+  'angle_revision': 'dc98ca69edd0a803eed76e16d650fa69ea5610f0',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.