Revert r258965 aka reland r258122

Revert r258965 aka reland r258122

gpu: Allow fences to check whether a flush has occurred

This skips waiting on a fence that was created but never committed.

BUG=352419, 355275
TBR=piman@chromium.org

> Original Review URL: https://codereview.chromium.org/197563003

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=261383

[no sievers, 2014-04-02 23:12:02]

The CQ bit was checked by sievers@chromium.org

[no sievers, 2014-04-02 23:12:15]

The CQ bit was unchecked by sievers@chromium.org

[no sievers, 2014-04-03 02:02:38]

The CQ bit was checked by sievers@chromium.org

[commit-bot: I haz the power, 2014-04-03 02:09:44]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sievers@chromium.org/222103008/1

[commit-bot: I haz the power, 2014-04-03 08:33:01]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-03 08:33:01]

Commit queue rejected this change because the description was changed
between the time the change entered the commit queue and the time it
was ready to commit. You can safely check the commit box again.

[no sievers, 2014-04-03 14:40:40]

The CQ bit was checked by sievers@chromium.org

[commit-bot: I haz the power, 2014-04-03 14:42:29]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sievers@chromium.org/222103008/1

[commit-bot: I haz the power, 2014-04-03 14:45:03]

Change committed as 261383