Roll src/third_party/skia f5b14d8843e6..79b81c9b4709 (3 commits)

https://skia.googlesource.com/skia.git/+log/f5b14d8843e6..79b81c9b4709

git log f5b14d8843e6..79b81c9b4709 --date=short --no-merges --format='%ad %ae %s'
2019-07-31 senorblanco@chromium.org First implementation of GrDawnProgramDataManager.
2019-07-31 senorblanco@chromium.org First implementation of GrDawnVaryingHandler.
2019-07-31 bungeman@google.com Allow HarfBuzz to massage the character stream.

Created with:
  gclient setdep -r src/third_party/skia@79b81c9b4709

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


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
TBR=benjaminwagner@google.com

Bug: None
Change-Id: I77cba3ac5623b52b77188dab2f047a3daee54c5c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1729558Reviewed-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@{#682967}

DEPS

@@ -145,7 +145,7 @@ 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': 'f5b14d8843e65dbc79afbe48ef7009748a40305e',
+  'skia_revision': '79b81c9b4709b7226e6a15d91beb0c4ac5ae78c6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.