Revert of Refactor SkPictureStateTree::Iterator to avoid use of kClip_SaveFlag.

Revert of Refactor SkPictureStateTree::Iterator to avoid use of kClip_SaveFlag. (https://codereview.chromium.org/246893005/)

Reason for revert:
https://code.google.com/p/chromium/issues/detail?id=366889

Original issue's description:
> Refactor SkPictureStateTree::Iterator to avoid use of kClip_SaveFlag.
> 
> The current implementation relies on soon-to-be-deprecated
> kClip_SaveFlag behavior. Updated to use default save flags
> (kMatrixClip_SaveFlag) and stop assuming that the matrix survives
> restore() calls.
> 
> R=junov@chromium.org,robertphillips@chromium.org,reed@google.com
> 
> Committed: http://code.google.com/p/skia/source/detail?r=14319

TBR=junov@chromium.org,reed@google.com,robertphillips@chromium.org,robertphillips@google.com,fmalita@chromium.org
NOTREECHECKS=true
NOTRY=true

Committed: http://code.google.com/p/skia/source/detail?r=14383

[bsalomon, 2014-04-25 15:12:53]

Created Revert of Refactor SkPictureStateTree::Iterator to avoid use of
kClip_SaveFlag.

[commit-bot: I haz the power, 2014-04-25 15:13:21]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/bsalomon@google.com/250733007/1

[commit-bot: I haz the power, 2014-04-25 15:13:32]

Change committed as 14383