Roll Skia from 9f704a864008 to 2847d078c511 (7 revisions)

https://skia.googlesource.com/skia.git/+log/9f704a864008..2847d078c511

2021-02-05 reed@google.com Undo legacy high-quality hack
2021-02-05 robertphillips@google.com Revert "Don't simplify strokes that could have been tessellated"
2021-02-05 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from 14dcbed947ce to ff010f9f0131 (2 revisions)
2021-02-05 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Dawn from d5a0728b67c8 to 2b9707d3369a (7 revisions)
2021-02-05 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Chromium from 782ff20a to e94d2f0d (512 revisions)
2021-02-05 csmartdalton@google.com Don't simplify strokes that could have been tessellated
2021-02-05 bsalomon@google.com Keep mapped buffer manager alive until after buffers are disposed of.

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 robertphillips@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: chromium:1153592,chromium:1172543
Tbr: robertphillips@google.com
Change-Id: Id8b0d3d83419d937402d0d3e9c59f38f2434211e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2678192


Reviewed-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@{#851131}