Roll src/third_party/skia 4b91f76:9db912c

Roll src/third_party/skia 4b91f76:9db912c

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/4b91f76..9db912c

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

Committed: https://crrev.com/d1f08340ba677fb4465d4d6968885f3c6433fae5
Cr-Commit-Position: refs/heads/master@{#330612}

[skia-deps-roller, 2015-05-19 18:30:30]

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

[skia-deps-roller, 2015-05-19 18:30:32]

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

[commit-bot: I haz the power, 2015-05-19 18:31:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1148563003/1

[commit-bot: I haz the power, 2015-05-19 20:35:12]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-05-19 20:35:13]

Try jobs failed on following builders:
  mac_chromium_rel_ng on tryserver.chromium.mac (JOB_TIMED_OUT, no build URL)

[mtklein, 2015-05-19 20:43:49]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2015-05-19 20:44:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1148563003/1

[commit-bot: I haz the power, 2015-05-19 21:38:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-19 21:40:14]

Patchset 1 (id:??) landed as
https://crrev.com/d1f08340ba677fb4465d4d6968885f3c6433fae5
Cr-Commit-Position: refs/heads/master@{#330612}