cc: Remove if checks for PictureLayerImpl::tilings_.

cc: Remove if checks for PictureLayerImpl::tilings_.

This is never null anymore, no need to check for null-ness.

R=vmpstr

Committed: https://crrev.com/85e2956876d4641c5f71feeb0a12c09337804f2e
Cr-Commit-Position: refs/heads/master@{#312924}

[enne (OOO), 2015-01-23 20:54:10]

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

[enne (OOO), 2015-01-23 20:54:10]

The CQ bit was checked by enne@chromium.org

[enne (OOO), 2015-01-23 20:54:10]

lgtm

[commit-bot: I haz the power, 2015-01-23 20:55:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/865973007/1

[commit-bot: I haz the power, 2015-01-23 20:59:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-23 21:00:57]

Patchset 1 (id:??) landed as
https://crrev.com/85e2956876d4641c5f71feeb0a12c09337804f2e
Cr-Commit-Position: refs/heads/master@{#312924}