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This will be a bit hairy to review.

The FillBounds and CollectLayers code has diverged significantly resulting in the rendering path seeing different bounds than the hoisting path. This CL merges the FillBounds changes into CollectLayers. A follow on CL will, hopefully, find a way to layer CollectLayers on top of FillBounds.

The only code in CollectLayers that is different from FillBounds is bracketed by "LAYER HOISTING" comments.

NOTREECHECKS=true

Committed: https://skia.googlesource.com/skia/+/d8aa7b74c8ef0cb8ed3f6b03beb7ee5013624372

[robertphillips, 2014-10-30 20:46:27]

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

[bsalomon, 2014-10-30 21:49:35]

lgtm. Definitely need to find a way to share the code that is the same between
these two.

Also, might be good to more clearly distinguish the begin/end layer hoisting
comments, e.g. use "begin" and "end" in the comment text.

[robertphillips, 2014-10-30 23:35:25]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2014-10-30 23:36:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/685263004/180001

[robertphillips, 2014-10-30 23:44:42]

The CQ bit was unchecked by robertphillips@google.com

[robertphillips, 2014-10-30 23:44:43]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2014-10-30 23:44:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/685263004/180001

[commit-bot: I haz the power, 2014-10-30 23:45:06]

Committed patchset #10 (id:180001) as d8aa7b74c8ef0cb8ed3f6b03beb7ee5013624372