SkPicture::PathCounter is O(N^2) for pictures nested N deep. Fix that.

SkPicture::PathCounter is O(N^2) for pictures nested N deep.  Fix that.

We've already done the analysis for child pictures.  Don't do it again.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/4fc5b8811e8c2a09fcbb3714e44697079f9ec692

[mtklein, 2014-09-15 19:23:02]

mtklein@google.com changed reviewers:
+ fmalita@google.com, mtklein@google.com

[mtklein, 2014-09-15 19:23:06]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-09-15 19:23:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/573833002/1

[commit-bot: I haz the power, 2014-09-15 19:23:33]

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 a valid reviewer till 2014-09-16 01:23 UTC

[f(malita), 2014-09-15 19:24:54]

fmalita@chromium.org changed reviewers:
+ fmalita@chromium.org

[f(malita), 2014-09-15 19:24:54]

LGTM!

[commit-bot: I haz the power, 2014-09-15 19:31:37]

Committed patchset #1 (id:1) as 4fc5b8811e8c2a09fcbb3714e44697079f9ec692