Roll src/third_party/skia 498bc5f:de258cd

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/498bc5f..de258cd

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

Review URL: https://codereview.chromium.org/659913002

Cr-Commit-Position: refs/heads/master@{#299843}

DEPS

@@ -44,7 +44,7 @@ vars = {
   'boringssl_git': 'https://boringssl.googlesource.com',
   'libvpx_revision': 'efe9712d52c2d216fb3d1ceb508b8148847a7e4b',
   'sfntly_revision': '1bdaae8fc788a5ac8936d68bf24f37d977a13dac',
-  'skia_revision': '498bc5f03685c48bee1bfa6b61fb62cd1d2ade50',
+  'skia_revision': 'de258cd6b402c4da78b66e88191ad02162d87916',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.