Roll Skia from 44dff4f2012d to 1a49a5334c36 (8 revisions)

https://skia.googlesource.com/skia.git/+log/44dff4f2012d..1a49a5334c36

2020-09-21 johnstiles@google.com Restructure blend functions to allow for smarter inlining.
2020-09-21 johnstiles@google.com Rename 'DefaultSettings' golden outputs to 'StandaloneSettings'.
2020-09-21 jvanverth@google.com Revert "Reland "Use Microsoft's ComPtr to wrap D3D12 objects.""
2020-09-21 johnstiles@google.com Create golden outputs for SkSL blend functions.
2020-09-21 johnstiles@google.com Add convenience methods to CFG builder.
2020-09-21 egdaniel@google.com Allow client to pass in VK_IMAGE_LAYOUT_UNDEFINED into mutable state change requests.
2020-09-21 egdaniel@google.com Make GrStencilAttachment derive from GrSurface.
2020-09-21 johnstiles@google.com Remove needless do-while(false) block from inlined blend methods.

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 csmartdalton@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/+doc/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
Cq-Do-Not-Cancel-Tryjobs: true
Bug: None
Tbr: csmartdalton@google.com
Change-Id: I94683c5bcdc3c981c7337329d9b69e30437eb05f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2422828
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#809214}

DEPS

@@ -195,7 +195,7 @@ 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': '44dff4f2012da1be49dc81834483871e30021626',
+  'skia_revision': '1a49a5334c36ff4100f673bd8d3b2c68a58fa319',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.