[Ozone-DRI] Re-enable GBM surface mode support

[Ozone-DRI] Re-enable GBM surface mode support

GBM surface mode requires synchronous page flips at the moment. We need
to set DriWrapper to synchronously page flip.

BUG=none
NOTRY=true

Committed: https://crrev.com/6aae766b5b703398b292e179b01c21631ab0d369
Cr-Commit-Position: refs/heads/master@{#311337}

[dnicoara, 2015-01-13 18:21:48]

dnicoara@chromium.org changed reviewers:
+ alexst@chromium.org

[dnicoara, 2015-01-13 18:21:48]

PTAL

[alexst (slow to review), 2015-01-13 18:24:12]

lgtm

[dnicoara, 2015-01-13 21:52:32]

The CQ bit was checked by dnicoara@chromium.org

[commit-bot: I haz the power, 2015-01-13 21:53:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/847213002/20001

[commit-bot: I haz the power, 2015-01-13 21:54:56]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-01-13 21:57:07]

Patchset 2 (id:??) landed as
https://crrev.com/6aae766b5b703398b292e179b01c21631ab0d369
Cr-Commit-Position: refs/heads/master@{#311337}