Roll src/third_party/skia 209c162:c9e190d

Roll src/third_party/skia 209c162:c9e190d

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/209c162..c9e190d

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

Commits in this roll:
c9e190d reed@google.com Revert of change pixel-serializer to support reencoding existing data (patchset #5 id:80001 of https://codereview.chromium.org/1373683003/ )
25a5b0d robertphillips@google.com Revert of SkImage-backed SkPictureShader (patchset #4 id:60001 of https://codereview.chromium.org/1343153003/ )
0869267 herb@google.com Add cast and assignment operators to SkAtomic.
13f48dc reed@google.com change pixel-serializer to support reencoding existing data

Committed: https://crrev.com/9c6a9a1af1e98a55ca74c77670f25aa254d0acde
Cr-Commit-Position: refs/heads/master@{#351106}

[skia-deps-roller, 2015-09-28 17:01:09]

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

[skia-deps-roller, 2015-09-28 17:01:11]

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

[commit-bot: I haz the power, 2015-09-28 17:02:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1370203003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1370203003/1

[commit-bot: I haz the power, 2015-09-28 19:24:49]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-28 19:26:44]

Patchset 1 (id:??) landed as
https://crrev.com/9c6a9a1af1e98a55ca74c77670f25aa254d0acde
Cr-Commit-Position: refs/heads/master@{#351106}