Skia roll df886ea:ae232a2

https://skia.googlesource.com/skia/+log/df886ea06f0978e10695b482e658cf3daa9a1fc9..ae232a20d74de16baaec356787f968b4f04144c6

CQ_EXTRA_TRYBOTS=tryserver.blink:linux_blink_rel,linux_blink_dbg
TBR=stephana@google.com

Review URL: https://codereview.chromium.org/572843002

Cr-Commit-Position: refs/heads/master@{#295018}

DEPS

@@ -35,7 +35,7 @@ vars = {
   'boringssl_git': 'https://boringssl.googlesource.com',
   'libvpx_revision': '4947d55857acf2bf968016a7a00fe2b10fd52131',
   'sfntly_revision': '1bdaae8fc788a5ac8936d68bf24f37d977a13dac',
-  'skia_revision': 'df886ea06f0978e10695b482e658cf3daa9a1fc9',
+  'skia_revision': 'ae232a20d74de16baaec356787f968b4f04144c6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.