Revert of ui: Add GLImage unit test framework.

Revert of ui: Add GLImage unit test framework. (patchset #17 id:320001 of https://codereview.chromium.org/1354483004/ )

Reason for revert:
Those tests are failing on Linux GN bot.

failures:
GLImageRefCountedMemory/GLImageTest/0.CopyTexSubImage
GLImageSharedMemory/GLImageTest/0.CopyTexSubImage

http://build.chromium.org/p/chromium.linux/builders/Linux%20GN/builds/32944
http://build.chromium.org/p/chromium.linux/builders/Linux%20GN/builds/32945
http://build.chromium.org/p/chromium.linux/builders/Linux%20GN/builds/32946

Original issue's description:
> ui: Add GLImage unit test framework.
>
> This makes it possible to test GLImage implementations without
> requiring multi-process GpuMemoryBuffer support.
>
> This initial version is limited to testing CopyTexSubImage with
> the default buffer format but testing of more functionality and
> formats will be added in follow up patches.
>
> Also inlcudes some minor cleanup needed to not have GLImage
> implementations depend on GpuMemoryBuffer API.
>
> BUG=
> CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
>
> Committed: https://crrev.com/f9d17986fef45ad30ef4e6e468a7a56a90851508
> Cr-Commit-Position: refs/heads/master@{#352720}

TBR=dcastagna@chromium.org,glider@chromium.org,piman@chromium.org,sky@chromium.org,reveman@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/d47c24259da7aa49d2c26a6c3aa5b813a9aa53ac
Cr-Commit-Position: refs/heads/master@{#352743}

[Kunihiko Sakamoto, 2015-10-07 01:47:13]

Created Revert of ui: Add GLImage unit test framework.

[commit-bot: I haz the power, 2015-10-07 01:47:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1390083002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1390083002/1

[commit-bot: I haz the power, 2015-10-07 01:50:13]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-07 01:51:06]

Patchset 1 (id:??) landed as
https://crrev.com/d47c24259da7aa49d2c26a6c3aa5b813a9aa53ac
Cr-Commit-Position: refs/heads/master@{#352743}