Roll src/third_party/skia eb85b83:2da1a85

Roll src/third_party/skia eb85b83:2da1a85

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/eb85b83..2da1a85

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

Commits in this roll:
2da1a85 scroggo@google.com Stop benching PNG buildTileIndex by default
0adfffb kkinnunen@nvidia.com Fix dm with Chromium command buffer driver
fdb4757 msarett@google.com Add subsetting to SkScanlineDecoder

Committed: https://crrev.com/ecc9a6fcad94058b14df23c1e2a78002accdf965
Cr-Commit-Position: refs/heads/master@{#353880}

[skia-deps-roller, 2015-10-13 21:15:57]

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

[skia-deps-roller, 2015-10-13 21:15:59]

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

[commit-bot: I haz the power, 2015-10-13 21:17:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1407623002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1407623002/1

[commit-bot: I haz the power, 2015-10-13 22:39:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-13 22:41:18]

Patchset 1 (id:??) landed as
https://crrev.com/ecc9a6fcad94058b14df23c1e2a78002accdf965
Cr-Commit-Position: refs/heads/master@{#353880}