Roll Skia from 55aaefe687c7 to 03467a53e6d0 (5 revisions)

https://skia.googlesource.com/skia.git/+log/55aaefe687c7..03467a53e6d0

2021-03-04 johnstiles@google.com Revert "Disable control-flow analysis in SkSL. (Performance experiment)"
2021-03-04 johnstiles@google.com Allow ProgramVisitor::visitStatement to receive SwitchCase statements.
2021-03-04 brianosman@google.com Add new style key information to several core effects
2021-03-04 robertphillips@google.com GrGlGpu::ProgramCache no longer holds a GrGlGpu back pointer
2021-03-04 reed@google.com Clarify how we decide the bitdepth for picture-shader

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 stani@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: stani@google.com
Change-Id: I2a3fd571c5abdc828ffa516aa22bad32171f9c38
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2736614
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#859840}