Roll Skia from 1d2b075ce060 to f124108e2325 (4 revisions)

https://skia.googlesource.com/skia.git/+log/1d2b075ce060..f124108e2325

2020-12-15 mtklein@google.com how to use SkArenaAlloc with no friends
2020-12-15 csmartdalton@google.com Get CanvasKit viewer compiling again
2020-12-15 jmbetancourt@google.com implement SkAudioPLayer for Android
2020-12-14 johnstiles@google.com Optimize Gaussian convolution fragment processor.

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 tdenniston@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: tdenniston@google.com
Change-Id: Ief714543132e1f33bd4f6aa18a45c7481c1b0846
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2592056Reviewed-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@{#836955}

DEPS

@@ -199,7 +199,7 @@ 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': '1d2b075ce060e5851532b29fa8327658d5223837',
+  'skia_revision': 'f124108e23259cd309dcafea1efbd22460b4ee84',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.