Roll src/third_party/skia b18390699ea2..475b9d0fb796 (1 commits)

https://skia.googlesource.com/skia.git/+log/b18390699ea2..475b9d0fb796

git log b18390699ea2..475b9d0fb796 --date=short --first-parent --format='%ad %ae %s'
2020-03-08 chrdavis@microsoft.com Remove global static mutex in SkScalerContext_win_dw.cpp

Created with:
  gclient setdep -r src/third_party/skia@475b9d0fb796

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 brianosman@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/+/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: brianosman@google.com
Change-Id: I2872bdd6bc0224ad1c058445516fc75d92db10c3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2093528Reviewed-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@{#748079}

DEPS

@@ -175,7 +175,7 @@ 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': 'b18390699ea2964919aa2997ce5d3ed4989ac76b',
+  'skia_revision': '475b9d0fb796e9a8c58a65e62964e1f05d267185',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.