Roll src/third_party/skia 59b3815:86217d8

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/59b3815..86217d8

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

Review URL: https://codereview.chromium.org/666433004

Cr-Commit-Position: refs/heads/master@{#301301}

DEPS

@@ -44,7 +44,7 @@ vars = {
   'boringssl_git': 'https://boringssl.googlesource.com',
   'libvpx_revision': '2e5ced5fd62a73f4f5687ab19520b3aad1c53f6f',
   'sfntly_revision': '1bdaae8fc788a5ac8936d68bf24f37d977a13dac',
-  'skia_revision': '59b3815eaa76ee7116f9f07b4ef6c924eb10cadb',
+  'skia_revision': '86217d831d70949f9dde6a60f821d3f357558bdf',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.