Roll src/third_party/skia ad994cd8941d..9d1cb79e7718 (5 commits)

https://skia.googlesource.com/skia.git/+log/ad994cd8941d..9d1cb79e7718

git log ad994cd8941d..9d1cb79e7718 --date=short --first-parent --format='%ad %ae %s'
2019-12-10 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-12-10 mtklein@google.com test for c++17 w/ c++14 stdlib
2019-12-10 scroggo@google.com SkWebpCodec: enable a loop count of 1
2019-12-10 herb@google.com Move luminance calculation to GrTextBlob::Make()
2019-12-10 egdaniel@google.com Add GrSurfaceProxyView to the various draw atlas ops.

Created with:
  gclient setdep -r src/third_party/skia@9d1cb79e7718

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 djsollen@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: djsollen@google.com
Change-Id: I604c656482a3d05775a674d4fd2da2d94890c8a2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1961001Reviewed-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@{#723624}

DEPS

@@ -172,7 +172,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': 'ad994cd8941dfcb4c30ef7b58a40fb351c0e938f',
+  'skia_revision': '9d1cb79e7718459ff38a6a3ba93750613bab9e07',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.