Roll src/third_party/skia/ 992854d62..fcad44bbb (2 commits).
Roll src/third_party/skia/ 992854d62..fcad44bbb (2 commits).

https://chromium.googlesource.com/skia.git/+log/992854d62e17..fcad44bbb1e0

$ git log 992854d62..fcad44bbb --date=short --no-merges --format='%ad %ae %s'
2016-03-06 halcanary SkPDF: AutoTUnref<T> changes in use
2016-03-06 reed Fix behavior of sk_sp::reset(T*) and add unittest.

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

Review URL: https://codereview.chromium.org/1770743002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#379505}

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