Roll src/third_party/skia 5207f35f33b1..21a940d42fee (7 commits)

https://skia.googlesource.com/skia.git/+log/5207f35f33b1..21a940d42fee


git log 5207f35f33b1..21a940d42fee --date=short --no-merges --format='%ad %ae %s'
2019-07-23 reed@google.com refactor paragraph samples
2019-07-23 bsalomon@google.com Add driver workaround to avoid noperspective on QC with ver 3.1 or earlier
2019-07-23 reed@google.com remove default looper flag, rely on clients to opt-in
2019-07-23 fmalita@chromium.org [sksg] Fix setVisible() invalidation
2019-07-23 bsalomon@google.com Lift GrRenderTargetContext::rescale to GrSufaceContext
2019-07-23 brianosman@google.com Fix a couple potential bugs when adding sampler info to a program key
2019-07-23 bsalomon@google.com Remove sample count from GrSurfaceDesc.


Created with:
  gclient setdep -r src/third_party/skia@21a940d42fee

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=borenet@google.com

Bug: chromium:986581
Change-Id: I32b65bc06ee0b851fbd1e404b7c2cd201d73f7c4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1714918Reviewed-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@{#680008}

DEPS

@@ -144,7 +144,7 @@ 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': '5207f35f33b1ccc173cff02bd0a38223554ba6f2',
+  'skia_revision': '21a940d42fee6fb884843319d2e7c676bc1690df',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.