GPU: Only restore one texture unit in ScopedTextureBinder.

GPU: Only restore one texture unit in ScopedTextureBinder.

We only set one, so only one needs to be restored.

Restoring all can really add up with multiple targets and
potentially hundreds of units.

BUG=353879, 353822
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=258678

[epenner, 2014-03-20 01:17:02]

Whipped this up as I think it's important shortly. Thankfully the
ScopedTextureBinder doesn't require several units, as we can see from the
fall-back which sets/gets the read GL-state.

[epenner, 2014-03-20 01:20:39]

On 2014/03/20 01:17:02, epenner wrote:
> Whipped this up as I think it's important shortly. Thankfully the
> ScopedTextureBinder doesn't require several units, as we can see from the
> fall-back which sets/gets the read GL-state.

Ptal.

[piman, 2014-03-20 21:08:17]

lgtm

[epenner, 2014-03-20 21:51:58]

The CQ bit was checked by epenner@chromium.org

[commit-bot: I haz the power, 2014-03-20 21:57:18]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/epenner@chromium.org/205843002/60001

[commit-bot: I haz the power, 2014-03-21 00:50:50]

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

[commit-bot: I haz the power, 2014-03-21 00:50:50]

Retried try job too often on win_rel for step(s) content_browsertests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[epenner, 2014-03-21 20:57:10]

The CQ bit was checked by epenner@chromium.org

[commit-bot: I haz the power, 2014-03-21 20:57:48]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/epenner@chromium.org/205843002/60001

[commit-bot: I haz the power, 2014-03-21 22:05:33]

Change committed as 258678