Roll Skia from e548dcbf1b8e to c957bfbe2c42 (1 revision)

https://skia.googlesource.com/skia.git/+log/e548dcbf1b8e..c957bfbe2c42

2021-02-18 reed@google.com Opt into new image-shaders with sampling

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-skiabot-test-autoroll
Please CC borenet@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

Tbr: borenet@google.com
Change-Id: Id304207f87bb99da601773319e7ea41ce961fc86
Reviewed-on: https://skia-review.googlesource.com/c/skiabot-test/+/374760
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index f0c2d97..10d8518 100644
--- a/DEPS
+++ b/DEPS
@@ -3,7 +3,7 @@
   # 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': 'e548dcbf1b8e7a926ce740a0d47f526a843f449a',
+  'skia_revision': 'c957bfbe2c42a5ebe593735f9c78a2af7f4493a7',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.