Roll src/third_party/angle aae71bda01a7..19dd51b005fe (2 commits)

https://chromium.googlesource.com/angle/angle.git/+log/aae71bda01a7..19dd51b005fe

git log aae71bda01a7..19dd51b005fe --date=short --no-merges --format='%ad %ae %s'
2019-11-06 geofflang@chromium.org GL: Expose PBO extensions
2019-11-06 angle-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/spirv-tools/src e0d5544c9864..d9fbf0234869 (3 commits)

Created with:
  gclient setdep -r src/third_party/angle@19dd51b005fe

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: I8aea320ac708d03c967e4bc1c7cfdc5587bcc67f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1900916Reviewed-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@{#712969}

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': 'aae71bda01a7105c410477d68510e7e52bf96771',
+  'angle_revision': '19dd51b005fe2663fb2f8190c27aa38e590f76d6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.