Roll src/third_party/skia 7bacbf71f7d3..4da34bf74723 (2 commits)

https://skia.googlesource.com/skia.git/+log/7bacbf71f7d3..4da34bf74723


git log 7bacbf71f7d3..4da34bf74723 --date=short --no-merges --format='%ad %ae %s'
2019-07-30 senorblanco@chromium.org First implementation of GrDawnUniformHandler.
2019-07-30 halcanary@google.com experimental/editor: clean up BUILD.gn


Created with:
  gclient setdep -r src/third_party/skia@4da34bf74723

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: I4275a9f42d4fa58692e9c5894397cffc87efba8e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1726294Reviewed-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@{#682316}

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': '7bacbf71f7d317c5f86194e9a649f73fef310042',
+  'skia_revision': '4da34bf74723a55b0549f6fae960748a7685e64e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.