Roll src/third_party/skia 135b7ec:5cffba8

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/135b7ec..5cffba8

CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
TBR=hcm@google.com

Review URL: https://codereview.chromium.org/1039153003

Cr-Commit-Position: refs/heads/master@{#322645}

DEPS

@@ -42,7 +42,7 @@ vars = {
   'boringssl_git': 'https://boringssl.googlesource.com',
   'libvpx_revision': '861f35b01c87a021540aace739cb7415c08e987b',
   'sfntly_revision': '1bdaae8fc788a5ac8936d68bf24f37d977a13dac',
-  'skia_revision': '135b7ecaa81018aa497da6ef8a8493263df456ef',
+  'skia_revision': '5cffba8d8e6965b10017fae7d8b67c8724e12822',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.