Fix clipping when all analytic FP creations can be skipped

Fix clipping when all analytic FP creations can be skipped

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/0b5b6b2105cf6a60824a28e002abf0d322e4344a

[bsalomon, 2015-10-14 15:17:20]

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

[bsalomon, 2015-10-14 15:17:24]

The CQ bit was checked by bsalomon@google.com

[commit-bot: I haz the power, 2015-10-14 15:17:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1400343004/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1400343004/20001

[commit-bot: I haz the power, 2015-10-14 15:17:33]

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 valid reviewer(s) till 2015-10-14 21:17 UTC

[joshualitt, 2015-10-14 15:30:38]

On 2015/10/14 15:17:33, commit-bot: I haz the power wrote:
> 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 valid reviewer(s) till 2015-10-14 21:17 UTC

lgtm

[commit-bot: I haz the power, 2015-10-14 15:31:37]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/0b5b6b2105cf6a60824a28e002abf0d322e4344a