Roll src/third_party/skia 1c40292:6a14434

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/1c40292..6a14434

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

Review URL: https://codereview.chromium.org/871913006

Cr-Commit-Position: refs/heads/master@{#312948}

DEPS

@@ -42,7 +42,7 @@ vars = {
   'boringssl_git': 'https://boringssl.googlesource.com',
   'libvpx_revision': 'cc9c0c5198e416173f480fb1f11e052f5c29a95b',
   'sfntly_revision': '1bdaae8fc788a5ac8936d68bf24f37d977a13dac',
-  'skia_revision': '1c4029296f518a84ef90095243ba210163a1e1f9',
+  'skia_revision': '6a144345d742a53ffb15bbd83f2718022fca8df5',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.