Roll src/third_party/skia 9d91492203f0..7655168e6865 (3 commits)

https://skia.googlesource.com/skia.git/+log/9d91492203f0..7655168e6865

git log 9d91492203f0..7655168e6865 --date=short --first-parent --format='%ad %ae %s'
2020-01-15 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 8b3a0fa81050..86f730971751 (12 commits)
2020-01-15 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src e2015449184d..b83f9414fec4 (758 commits)
2020-01-15 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader f6d3cbb28303..146e16f68fdc (18 commits)

Created with:
  gclient setdep -r src/third_party/skia@7655168e6865

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-autoroll
Please CC mtklein@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-blink-rel;luci.chromium.try:linux-chromeos-compile-dbg;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Bug: None
Tbr: mtklein@google.com
Change-Id: I113b4d9c775bf2012bc82d4b8a24ac3db0ff2601
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2001569
Reviewed-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@{#731884}