Roll src/third_party/skia 3679c1b:d1c6b7c

Roll src/third_party/skia 3679c1b:d1c6b7c

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/3679c1b..d1c6b7c

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

Commits in this roll:
d1c6b7c mtklein@chromium.org SkColorCubeFilter: require alpha == 0xFF.

Committed: https://crrev.com/d624a2808496edcd5e84ce145f890a85bc463bef
Cr-Commit-Position: refs/heads/master@{#344423}

[skia-deps-roller, 2015-08-20 02:01:15]

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

[skia-deps-roller, 2015-08-20 02:01:16]

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

[commit-bot: I haz the power, 2015-08-20 02:01:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1299333005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1299333005/1

[commit-bot: I haz the power, 2015-08-20 04:07:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-20 04:07:36]

Patchset 1 (id:??) landed as
https://crrev.com/d624a2808496edcd5e84ce145f890a85bc463bef
Cr-Commit-Position: refs/heads/master@{#344423}