Roll src/third_party/skia/ 776d49b41..9d344069c (3 commits).
Roll src/third_party/skia/ 776d49b41..9d344069c (3 commits).

https://chromium.googlesource.com/skia.git/+log/776d49b41bb2..9d344069c5d4

$ git log 776d49b41..9d344069c --date=short --no-merges --format='%ad %ae %s'
2015-12-07 mtklein better NEON div255
2015-12-07 senorblanco Matrix convolution bounds fix; affectsTransparentBlack fixes.
2015-12-07 jvanverth Add transfer buffer to GLCaps

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

Review URL: https://codereview.chromium.org/1504713003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#363548}

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