Roll src/third_party/skia d4fb7c7b140d..9042d46ff46c (3 commits)

https://skia.googlesource.com/skia.git/+log/d4fb7c7b140d..9042d46ff46c

git log d4fb7c7b140d..9042d46ff46c --date=short --no-merges --format='%ad %ae %s'
2019-11-18 jvanverth@google.com Add Metal support for dynamic texture state
2019-11-18 robertphillips@google.com Add FwidthSquircleTestOp::onPrePrepare
2019-11-18 robertphillips@google.com Reformat gn files

Created with:
  gclient setdep -r src/third_party/skia@9042d46ff46c

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/+/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
TBR=robertphillips@google.com

Bug: None
Change-Id: I69a4a84dbb7a81a6a3c6650924beec4d7da468c1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1922068
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@{#716227}

DEPS

@@ -172,7 +172,7 @@ 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': 'd4fb7c7b140d5d30778b184a8aae64be68b349c7',
+  'skia_revision': '9042d46ff46cab8cee8222a9756e107ce3ef8852',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.