Roll src/third_party/skia ad21d47cfa8d..7cb52cb5e67c (11 commits)

https://skia.googlesource.com/skia.git/+log/ad21d47cfa8d..7cb52cb5e67c

git log ad21d47cfa8d..7cb52cb5e67c --date=short --no-merges --format='%ad %ae %s'
2019-11-12 senorblanco@chromium.org Dawn: implement dynamic primitive processor texture handling.
2019-11-12 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-11-12 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 31edef751a8d..9da287fd0264 (6 commits)
2019-11-12 jvanverth@google.com Detect whether trying to blit a Metal swapchain texture, and fail if so.
2019-11-12 senorblanco@chromium.org Dawn: fix bug in stencil handling.
2019-11-12 nigeltao@google.com Free SkWuffsCodec frame-count decoder earlier
2019-11-12 bungeman@google.com Track and force opsz axis on Mac.
2019-11-12 herb@google.com Make metrics const on SkStrike
2019-11-12 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-11-12 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 012d15196023..e33c1582b4bc (6 commits)
2019-11-12 herb@google.com WS: SkStrike

Created with:
  gclient setdep -r src/third_party/skia@7cb52cb5e67c

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 halcanary@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
TBR=halcanary@google.com

Bug: chromium:None,chromium:None
Change-Id: Iefe95942b57a99d293d1bbc2c4e32211660ce9a0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1911664Reviewed-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@{#714555}

DEPS

@@ -168,7 +168,7 @@ 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': 'ad21d47cfa8d9adb2145216c5e514d978d649096',
+  'skia_revision': '7cb52cb5e67cd029e5ae7dc68d91eb8488072bf9',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.