Roll src/third_party/skia f3782fa:381b26f

Roll src/third_party/skia f3782fa:381b26f

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/f3782fa..381b26f

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

Commits in this roll:
381b26f joshualitt@chromium.org find image whenever we generateGlyph.  This should ensure the glyph is fully initialized before we start using the maskformat.
159fa57 caryclark@google.com linear gradient with stops discretized gm
6d901da egdaniel@google.com Move some parts of onReadPixels up to GrGpu readPixels.
b46e5e2 msarett@google.com Rename SkCodec_libbmp to SkBmpCodec
4358f13 scroggo@chromium.org Call notifyPixelsChanged after modifying bitmap

Committed: https://crrev.com/67e08ec972f729d5f1e362d7df1ef35d3700c0c9
Cr-Commit-Position: refs/heads/master@{#341201}

[skia-deps-roller, 2015-07-30 20:30:23]

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

[skia-deps-roller, 2015-07-30 20:30:24]

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

[commit-bot: I haz the power, 2015-07-30 20:31:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1256823005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1256823005/1

[commit-bot: I haz the power, 2015-07-30 21:52:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-30 21:53:03]

Patchset 1 (id:??) landed as
https://crrev.com/67e08ec972f729d5f1e362d7df1ef35d3700c0c9
Cr-Commit-Position: refs/heads/master@{#341201}