Reland of Revert of ozone: Remove singleton pattern for SurfaceFactoryOzone.

Reland of Revert of ozone: Remove singleton pattern for SurfaceFactoryOzone.

TBR=sievers (already reviewed)

Reason for reland:
Fix build for ozone_demo.

> Revert of ozone: Remove singleton pattern for SurfaceFactoryOzone. (patchset #1 id:1 of https://codereview.chromium.org/1159493010/)
>
> Reason for revert:
> Broke Linux ChromiumOS compile.
> http://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Ozone%20Builder/builds/17764/steps/compile/logs/stdio#error1
>
> Original issue's description:
> > ozone: Remove singleton pattern for SurfaceFactoryOzone.
> >
> > OzonePlatform is sigleton already, so it's not necessary for
> > SurfaceFactoryOzone to be singleton.
> >
> > Committed: https://crrev.com/48b0a7165bd6c9d889fc6d6959a6e59cf7ef9dc6
> > Cr-Commit-Position: refs/heads/master@{#332889}
>
> TBR=spang@chromium.org,sievers@chromium.org,alexst@chromium.org,dongseong.hwang@intel.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Review URL: https://codereview.chromium.org/1167533007
>
> Cr-Commit-Position: refs/heads/master@{#332899}

Committed: https://crrev.com/9162b5faf0dba619c58c2ce1cb42bcffccc48627
Cr-Commit-Position: refs/heads/master@{#333070}

[dshwang, 2015-06-05 08:10:36]

dongseong.hwang@intel.com changed reviewers:
+ sievers@chromium.org, spang@chromium.org, zea@chromium.org

[dshwang, 2015-06-05 08:12:02]

spang, sievers, could you review again?
Previous CL is reverted in https://codereview.chromium.org/1167533007/ because
of ozone_demo build failure. Now ozone_demo is fine to build.

https://codereview.chromium.org/1171513002/diff/1/ui/ozone/demo/software_rend...
File ui/ozone/demo/software_renderer.cc (right):

https://codereview.chromium.org/1171513002/diff/1/ui/ozone/demo/software_rend...
ui/ozone/demo/software_renderer.cc:10: #include
"ui/ozone/public/ozone_platform.h"
this line is added.

[spang, 2015-06-05 15:34:18]

lgtm

[spang, 2015-06-05 15:36:02]

The CQ bit was checked by spang@chromium.org

[spang, 2015-06-05 15:36:22]

TBR sievers there are no changes in that part

[commit-bot: I haz the power, 2015-06-05 15:37:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1171513002/1

[commit-bot: I haz the power, 2015-06-05 16:52:49]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-05 16:54:49]

Patchset 1 (id:??) landed as
https://crrev.com/9162b5faf0dba619c58c2ce1cb42bcffccc48627
Cr-Commit-Position: refs/heads/master@{#333070}