Revert of Update SkPicture cull rects with RTree information

Revert of Update SkPicture cull rects with RTree information (patchset #6 id:140001 of https://codereview.chromium.org/971803002/)

Reason for revert:
Might be breaking deps roll

Original issue's description:
> Update SkPicture cull rects with RTree information
> 
> When computed, the RTree for an SkPicture will have a root
> bounds that reflects the best bounding information available,
> rather than the best estimate at the time the picture recorder
> is created. Given that creators frequently don't know ahead of
> time what will be drawn, the RTree bound is often tighter.
> 
> Perf testing on Chrome indicates a small raster performance
> advantage. For upcoming painting changes in Chrome the
> performance advantage is much larger.
> 
> BUG=
> 
> Committed: https://skia.googlesource.com/skia/+/2dd3b6647dc726f36fd8774b3d0d2e83b493aeac

TBR=mtklein@google.com,schenney@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://skia.googlesource.com/skia/+/a0865b4620cc614586a5c02f258da2436ed3ab2b

[joshualitt, 2015-03-05 20:17:53]

Created Revert of Update SkPicture cull rects with RTree information

[commit-bot: I haz the power, 2015-03-05 20:18:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/977413003/1

[commit-bot: I haz the power, 2015-03-05 20:18:41]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/a0865b4620cc614586a5c02f258da2436ed3ab2b