Skia roll 3f376a5:249171e

https://skia.googlesource.com/skia/+log/3f376a55002c205aacacc4cb16ed745e3afbad31..249171e7d29b5559f3eefe9dbd437030bfad3fda

CQ_EXTRA_TRYBOTS=tryserver.chromium:linux_layout_rel
TBR=robertphillips@google.com
BUG=

Review URL: https://codereview.chromium.org/403293002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@284379 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -46,7 +46,7 @@ vars = {
   "lss_revision": "26",
   "sfntly_revision": "239",
   "lighttpd_revision": "33737",
-  "skia_revision": "3f376a55002c205aacacc4cb16ed745e3afbad31",
+  "skia_revision": "249171e7d29b5559f3eefe9dbd437030bfad3fda",
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.