Allow previously-hoisted layers to be reused in the same draw

Allow previously-hoisted layers to be reused in the same draw

In the Sierpinkski test case there are only a few layers appear in the "to be drawn" lists but they those layers get reused a lot of times with different transforms. This CL adds an additional category to allow such layers to be placed in the GrReplacements object without needing to be rendered.

This is split out of (Fix sub-picture layer rendering bugs - https://codereview.chromium.org/597293002/)

BUG=skia:2315
Committed: https://skia.googlesource.com/skia/+/b5a97154f893a5fd3495e16872d370124e93c6ca

[robertphillips, 2014-09-30 17:42:50]

robertphillips@google.com changed reviewers:
+ bsalomon@google.com

[robertphillips, 2014-09-30 17:44:40]

https://codereview.chromium.org/616023002/diff/20001/src/gpu/GrPictureUtils.cpp
File src/gpu/GrPictureUtils.cpp (right):

https://codereview.chromium.org/616023002/diff/20001/src/gpu/GrPictureUtils.c...
src/gpu/GrPictureUtils.cpp:129: dst.fOffset = SkIPoint::Make(newClip.fLeft,
newClip.fTop);
This is just a minor bug fix. I got the order wrong the first time around.

[robertphillips, 2014-09-30 17:47:09]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2014-09-30 17:48:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/616023002/20001

[commit-bot: I haz the power, 2014-09-30 17:48:05]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from a valid reviewer till 2014-09-30 23:48 UTC

[bsalomon, 2014-09-30 18:32:28]

lgtm

[commit-bot: I haz the power, 2014-09-30 18:33:06]

Committed patchset #2 (id:20001) as b5a97154f893a5fd3495e16872d370124e93c6ca