Revert of cc: Make Overlay unit tests work when sync query extension is available.

Revert of cc: Make Overlay unit tests work when sync query extension is available. (patchset #1 id:1 of https://codereview.chromium.org/669233003/)

Reason for revert:
Not properly reviewed.

Original issue's description:
> cc: Make Overlay unit tests work when sync query extension is available.
>
> GLRenderer expects a BeginDrawingFrame before each
> FinishDrawingFrame call.
>
> This also makes sure GLRenderer::BeginDrawingFrame doesn't
> early out before creating the read lock fence.
>
> BUG=428071
> TBR=danakj
> TEST=cc_unittests --gtest_filter=GLRendererWithOverlaysTest.ResourcesExportedAndReturned
>
> Committed: https://crrev.com/c9260a0912dfe55fb38f5d85f954a021d9a8d626
> Cr-Commit-Position: refs/heads/master@{#301775}

TBR=danakj@chromium.org,alexst@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=428071
Committed: https://crrev.com/9de4795a9852e92a2613349b139fe6ec07f14d13
Cr-Commit-Position: refs/heads/master@{#301840}

[reveman, 2014-10-29 15:35:59]

Created Revert of cc: Make Overlay unit tests work when sync query extension is
available.

[commit-bot: I haz the power, 2014-10-29 15:36:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/684133005/1

[commit-bot: I haz the power, 2014-10-29 15:37:22]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-29 15:38:00]

Patchset 1 (id:??) landed as
https://crrev.com/9de4795a9852e92a2613349b139fe6ec07f14d13
Cr-Commit-Position: refs/heads/master@{#301840}