Skia roll 30e6e2a:373dd9b

https://skia.googlesource.com/skia/+log/30e6e2af14e84216b1c113fd7500d0822bc81daa..373dd9b52f88158edd1e24419e6d937efaf59d55

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

Review URL: https://codereview.chromium.org/346823002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@278426 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -45,7 +45,7 @@ vars = {
   "lss_revision": "26",
   "sfntly_revision": "239",
   "lighttpd_revision": "33737",
-  "skia_revision": "30e6e2af14e84216b1c113fd7500d0822bc81daa",
+  "skia_revision": "373dd9b52f88158edd1e24419e6d937efaf59d55",
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.