don't normalize after perspective concat

don't normalize after perspective concat

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/9b1dd15d6d90bf623679f4e9b81b29fe9ab82807

[reed2, 2014-11-18 03:17:24]

The CQ bit was checked by reed@chromium.org

[commit-bot: I haz the power, 2014-11-18 03:18:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/734513004/1

[commit-bot: I haz the power, 2014-11-18 03:18:19]

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 2014-11-18 09:18 UTC

[reed2, 2014-11-18 03:19:57]

The CQ bit was unchecked by reed@chromium.org

[reed2, 2014-11-18 03:20:20]

reed@chromium.org changed reviewers:
+ bsalomon@google.com, caryclark@google.com, mtklein@google.com

[reed2, 2014-11-18 03:20:42]

reed@chromium.org changed reviewers:
+ reed@google.com

[mtklein, 2014-11-18 03:22:54]

lgtm

[reed1, 2014-11-18 14:04:16]

The CQ bit was checked by reed@google.com

[commit-bot: I haz the power, 2014-11-18 14:04:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/734513004/1

[commit-bot: I haz the power, 2014-11-18 14:04:41]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/9b1dd15d6d90bf623679f4e9b81b29fe9ab82807