Roll src/third_party/skia 5315fd4:9df4659

Roll src/third_party/skia 5315fd4:9df4659

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/5315fd4..9df4659

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

Commits in this roll:
9df4659 joshualitt@chromium.org Remove init function from GrTextContext.h
828877d mtklein@chromium.org Outline SkSpinlock::acquire().
af4edf9 herb@google.com Change to use mean and to use stderr.
5f10b5c joshualitt@chromium.org More threading of GrProcessorDataManager
cc29d26 mtklein@chromium.org Have nanobench pay attention to --threads.

Committed: https://crrev.com/e07eeff09655755e09588d1e7b47c026013b4270
Cr-Commit-Position: refs/heads/master@{#338120}

[skia-deps-roller, 2015-07-09 18:30:38]

The CQ bit was checked by skia-deps-roller@chromium.org

[skia-deps-roller, 2015-07-09 18:30:40]

This roll was created by the Blink AutoRollBot.
    http://www.chromium.org/blink/blinkrollbot

[commit-bot: I haz the power, 2015-07-09 18:35:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1228153002/1

[commit-bot: I haz the power, 2015-07-09 19:49:31]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-09 19:50:24]

Patchset 1 (id:??) landed as
https://crrev.com/e07eeff09655755e09588d1e7b47c026013b4270
Cr-Commit-Position: refs/heads/master@{#338120}