Roll src/third_party/skia c95e54b558d9..c1c4634dcb07 (4 commits)

https://skia.googlesource.com/skia.git/+log/c95e54b558d9..c1c4634dcb07

git log c95e54b558d9..c1c4634dcb07 --date=short --no-merges --format='%ad %ae %s'
2019-11-14 reed@google.com add some api helpers (extracted from different CL)
2019-11-14 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-11-14 benjaminwagner@google.com Use Clang for CMake build
2019-11-14 herb@google.com Hoist regenGlyphs out of per glyph loop

Created with:
  gclient setdep -r src/third_party/skia@c1c4634dcb07

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 halcanary@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=halcanary@google.com

Bug: None
Change-Id: I50167ba9d0b257d7bae38e4165085eb77c33d74a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1918480Reviewed-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@{#715527}

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': 'c95e54b558d9a910181715df291402c44e0d8d55',
+  'skia_revision': 'c1c4634dcb0713b11610feb52d2fa6ff84b6496f',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.