Roll src/third_party/skia/ 6b3eacb0d..8b1bff296 (1 commit).
Roll src/third_party/skia/ 6b3eacb0d..8b1bff296 (1 commit).

https://chromium.googlesource.com/skia.git/+log/6b3eacb0dfae..8b1bff29675a

$ git log 6b3eacb0d..8b1bff296 --date=short --no-merges --format='%ad %ae %s'
2016-03-25 cdalton Consolidate GPU buffer implementations

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

Review URL: https://codereview.chromium.org/1829333002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#383267}

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