Roll third_party/skia/ df7ab9373..ddb944ebd (134 commits; 20 trivial rolls)

https://skia.googlesource.com/skia.git/+log/df7ab9373bd0..ddb944ebd78c

This is a partial roll, since the next commit introduces linking errors:
https://skia-review.googlesource.com/c/skia/+/1013977.

Created with:
  roll-dep third_party/skia

Change-Id: I8b73760c2cee24aad0b89711e983f4ec663f7969
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/134012
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Andy Phan <andyphan@chromium.org>
diff --git a/DEPS b/DEPS
index 03dc8a3..efc915e 100644
--- a/DEPS
+++ b/DEPS
@@ -216,7 +216,7 @@
   # 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': 'df7ab9373bd042373c823f91a93ccb2888eeca43',
+  'skia_revision': 'ddb944ebd78cb072c8e85167a71141566b2bea93',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling test_fonts
   # and whatever else without interference from each other.