Roll src/third_party/skia b14e4a0:3c29c4d

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/b14e4a0..3c29c4d

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

Review URL: https://codereview.chromium.org/586593003

Cr-Commit-Position: refs/heads/master@{#295667}

DEPS

@@ -35,7 +35,7 @@ vars = {
   'boringssl_git': 'https://boringssl.googlesource.com',
   'libvpx_revision': '4947d55857acf2bf968016a7a00fe2b10fd52131',
   'sfntly_revision': '1bdaae8fc788a5ac8936d68bf24f37d977a13dac',
-  'skia_revision': 'b14e4a0db5cb1b96cef5236585ee4572c5d95b97',
+  'skia_revision': '3c29c4d36174750a13fc0db1be5584fc47737898',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.