Roll src/third_party/skia/ f8237781d..93a379bd4 (1 commit).
Roll src/third_party/skia/ f8237781d..93a379bd4 (1 commit).

https://chromium.googlesource.com/skia.git/+log/f8237781d28b..93a379bd4d6b

$ git log f8237781d..93a379bd4 --date=short --no-merges --format='%ad %ae %s'
2016-05-11 cdalton Separate user and raw stencil settings

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

Review-Url: https://codereview.chromium.org/1973673003
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#393098}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk