Harden validation for SkPathRef

Harden validation for SkPathRef

Committed: https://skia.googlesource.com/skia/+/0e912464cecf50cc152c3fb93c2aac31c8a99cac

[robertphillips, 2014-12-12 20:25:05]

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

[robertphillips, 2014-12-12 20:25:17]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2014-12-12 20:26:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/801003003/1

[commit-bot: I haz the power, 2014-12-12 20:26:25]

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 2014-12-13 02:26 UTC

[robertphillips, 2014-12-12 20:27:15]

The CQ bit was unchecked by robertphillips@google.com

[reed1, 2014-12-12 20:33:12]

Yikes!
lgtm

[robertphillips, 2014-12-12 20:46:56]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2014-12-12 20:47:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/801003003/1

[commit-bot: I haz the power, 2014-12-12 20:48:03]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/0e912464cecf50cc152c3fb93c2aac31c8a99cac