cc: Move the quad validation checks to the place quads are inserted.

cc: Move the quad validation checks to the place quads are inserted.

It's possible that DelegatedRendererLayerImpl decides to not append
a quad if it's not valid. In that case it could crash trying to
validate the non-existant quad.

R=piman@chromium.org
BUG=475099
Committed: https://crrev.com/f4bb78ba1e15f8be8a3943bedfe9a5f52c4ef42c
Cr-Commit-Position: refs/heads/master@{#324278}

[danakj, 2015-04-08 17:57:24]

danakj@chromium.org changed reviewers:
+ enne@chromium.org

[enne (OOO), 2015-04-08 18:44:13]

The CQ bit was checked by enne@chromium.org

[enne (OOO), 2015-04-08 18:44:13]

lgtm

[commit-bot: I haz the power, 2015-04-08 18:44:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1072563002/1

[commit-bot: I haz the power, 2015-04-08 20:09:48]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-08 20:10:45]

Patchset 1 (id:??) landed as
https://crrev.com/f4bb78ba1e15f8be8a3943bedfe9a5f52c4ef42c
Cr-Commit-Position: refs/heads/master@{#324278}