Roll Skia from d3927e40f1de to 990a04ecd5e8 (6 revisions)

https://skia.googlesource.com/skia.git/+log/d3927e40f1de..990a04ecd5e8

2020-06-09 herb@google.com remove unused and unimplemented calls
2020-06-09 herb@google.com move the bulk of GrTextContext to GrRenderTargetContext
2020-06-09 brianosman@google.com Remove SkValidatingReadBuffer.h
2020-06-09 jmbetancourt@google.com remove arcore from apps project directory
2020-06-09 adlai@google.com Don't fill last render task map with nullptrs
2020-06-09 egdaniel@google.com Disable support for sample locations in vulkan.

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/+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
Bug: None
Tbr: bungeman@google.com
Change-Id: Ibe189f5746fba54a524b791c3ea32f774298605b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2238688Reviewed-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@{#776760}

DEPS

@@ -182,7 +182,7 @@ 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': 'd3927e40f1de98833abc9340477a6a6a6cb856c3',
+  'skia_revision': '990a04ecd5e84f8d0fcad968a8fab8550e4a6cd1',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.