If a path is known to be nonfinite, don't forget that in our autobounds

If a path is known to be nonfinite, don't forget that in our autobounds
helper. "Once a non-finite, always a non-finite".

Inspired by crbug/157157
Committed: https://code.google.com/p/skia/source/detail?r=6087

[reed1, 2012-10-24 20:51:21]

Brian, can you try just the unittest on your windows box?

[bsalomon, 2012-10-24 21:01:03]

On 2012/10/24 20:51:21, reed1 wrote:
> Brian, can you try just the unittest on your windows box?

Failure on line 40.