Revert of Add PERSISTENT_MAP usage for GpuMemoryBuffers.

Revert of Add PERSISTENT_MAP usage for GpuMemoryBuffers. (patchset #11 id:330001 of https://codereview.chromium.org/1139903005/)

Reason for revert:
The is causing the freon chrome on chrome os build to fail.  Looks like a case for PERSISTENT_MAP also needs to be added to ui::GbmSurfaceFactory::CanCreateNativePixmap() in ui/ozone/platform/drm/gbm_surface_factory.cc.  Here is a link to a failing build: https://uberchromegw.corp.google.com/i/chromeos/builders/amd64-generic_freon%20chromium%20PFQ/builds/1151

Original issue's description:
> Add PERSISTENT_MAP usage for GpuMemoryBuffers.
>
> A GpuMemoryBuffer with this usage flag will always point at the
> same memory contents each time it is mapped. This will enable
> partial tile updates by avoiding rastering content from the
> previous frame again in the compositor.
>
> R=reveman,piman
> BUG=489447
>
> Committed: https://crrev.com/77180b4434d93f45022b8c65110344cdced4b19d
> Cr-Commit-Position: refs/heads/master@{#330987}

TBR=reveman@chromium.org,alexst@chromium.org,piman@chromium.org,sky@chromium.org,danakj@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=489447
Committed: https://crrev.com/1b81bc40235207ece7fe8cae3e7c1d828f7aa68f
Cr-Commit-Position: refs/heads/master@{#331140}

[Chirantan Ekbote, 2015-05-22 18:12:14]

Created Revert of Add PERSISTENT_MAP usage for GpuMemoryBuffers.

[commit-bot: I haz the power, 2015-05-22 18:13:58]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1151943003/1

[commit-bot: I haz the power, 2015-05-22 18:15:27]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-22 18:16:16]

Patchset 1 (id:??) landed as
https://crrev.com/1b81bc40235207ece7fe8cae3e7c1d828f7aa68f
Cr-Commit-Position: refs/heads/master@{#331140}