Roll src/third_party/skia 49c073257022..be4787124940 (9 commits)

https://skia.googlesource.com/skia.git/+log/49c073257022..be4787124940

git log 49c073257022..be4787124940 --date=short --no-merges --format='%ad %ae %s'
2019-09-26 mtklein@google.com hsw::S32_alpha_D32_filter_DX
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-26 csmartdalton@google.com Remove the resolve rect and resolve types from GrRenderTarget
2019-09-26 ethannicholas@google.com Revert "Revert "remove 'in uniform' support from GrSkSLFP, make rules more clear""
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-26 kjlubick@google.com [canvaskit] fix null terminator on drawText
2019-09-26 bsalomon@google.com srgb texture format cleanup.
2019-09-26 michaelludwig@google.com Improve subpixel coverage calculation for thin quads
2019-09-26 bsalomon@google.com Check support for each GL format independently.

Created with:
  gclient setdep -r src/third_party/skia@be4787124940

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 bungeman@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=bungeman@google.com

Bug: chromium:1007154,chromium:1003481
Change-Id: I122e5d54c189ccf2434831f7b6c77939654e7054
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1826935Reviewed-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@{#700412}

DEPS

@@ -162,7 +162,7 @@ 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': '49c073257022f4d37491606af67efe5603510685',
+  'skia_revision': 'be47871249402225d4aa2e85eb961f7dfb703c74',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.