Roll third_party/skia/ 81d35a72a..511af2e08 (23 commits; 3 trivial rolls)

https://chromium.googlesource.com/skia.git/+log/81d35a72aee9..511af2e086cc

Created with:
  roll-dep third_party/skia

Change-Id: Id74e0a38ba52bdffb2e5c6c9ebeff912e83a7a46
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/66251
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Hui Yingst <nigi@chromium.org>
diff --git a/DEPS b/DEPS
index 217ac7f..f8760e0 100644
--- a/DEPS
+++ b/DEPS
@@ -28,7 +28,7 @@
   'jpeg_turbo_revision': 'ce0e57e8e636f5132fe6f0590a4dba91f92fd935',
   'markupsafe_revision': '8f45f5cfa0009d2a70589bcda0349b8cb2b72783',
   'pdfium_tests_revision': '02dd653ec62649b6f1aa4e4526071cc32d903f54',
-  'skia_revision': '81d35a72aee9cdcf4794239875084504b6dbb611',
+  'skia_revision': '511af2e086cc8d6b9ca6782a6a8efd5b3dfc6028',
   'tools_memory_revision': 'f7b00daf4df7f6c469f5fbc68d7f40f6bd15d6e6',
   'trace_event_revision': '81c050f857a0e3c960cfd87f37e3d30d2ef78718',
   'v8_revision': 'cd34145326def51cb6dcf87aed7d0caf9f62bb4f',