Image generator-backed SkPictureShader

Image generator-backed SkPictureShader

A respin of http://crrev.com/866773002

R=reed@google.com

Committed: https://skia.googlesource.com/skia/+/ddc4b46c340d4572e1c29e97d5a85b4d76b9c577

[f(malita), 2015-08-31 22:45:35]

The CQ bit was checked by fmalita@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-08-31 22:45:42]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1323863002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1323863002/1

[commit-bot: I haz the power, 2015-08-31 22:50:34]

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

[commit-bot: I haz the power, 2015-08-31 22:50:34]

Dry run: This issue passed the CQ dry run.

[reed1, 2015-09-01 02:04:40]

do we already have GMs exercising this?

lgtm

[f(malita), 2015-09-01 02:53:09]

On 2015/09/01 02:04:40, reed1 wrote:
> do we already have GMs exercising this?

Yup, pictureshader & pictureshadertile.  I verified visually that they still
look correct, and will keep an eye out for minor gold diffs.

[f(malita), 2015-09-01 02:53:16]

The CQ bit was checked by fmalita@chromium.org

[commit-bot: I haz the power, 2015-09-01 02:53:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1323863002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1323863002/1

[commit-bot: I haz the power, 2015-09-01 02:54:07]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/ddc4b46c340d4572e1c29e97d5a85b4d76b9c577