Roll src/third_party/skia 7a10fb6:a30b2ee

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/7a10fb6..a30b2ee

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

Review URL: https://codereview.chromium.org/690283003

Cr-Commit-Position: refs/heads/master@{#302662}

DEPS

@@ -44,7 +44,7 @@ vars = {
   'boringssl_git': 'https://boringssl.googlesource.com',
   'libvpx_revision': '2e5ced5fd62a73f4f5687ab19520b3aad1c53f6f',
   'sfntly_revision': '1bdaae8fc788a5ac8936d68bf24f37d977a13dac',
-  'skia_revision': '7a10fb6bead0f63623307a7ff71b1dd323534a7f',
+  'skia_revision': 'a30b2ee0da169b00fb10d1a45b8e36441e16ce26',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.