Add CopyTexSubImage3D to GPU command buffer.

Add CopyTexSubImage3D to GPU command buffer.

BUG=429053
TEST=gpu_unittests
R=piman@chromium.org
NOTRY=true

Committed: https://crrev.com/66f3677cddf1524f3dde9107c9aa9be1e432b911
Cr-Commit-Position: refs/heads/master@{#313380}

[Zhenyao Mo, 2015-01-27 01:48:20]

Patchset #3 (id:40001) has been deleted

[Zhenyao Mo, 2015-01-27 01:48:27]

Patchset #2 (id:20001) has been deleted

[Zhenyao Mo, 2015-01-27 01:48:35]

Patchset #1 (id:1) has been deleted

[Zhenyao Mo, 2015-01-27 17:33:47]

Patchset #1 (id:60001) has been deleted

[Zhenyao Mo, 2015-01-27 17:33:56]

Patchset #1 (id:80001) has been deleted

[Zhenyao Mo, 2015-01-27 17:38:43]

piman: please review.

This is a straightforward command to add.  I also removed the size validation
code on the service side for ES3 commands because the plan is for MANGLE to do
it.

Others: FYI (feel free to review)

[piman, 2015-01-27 21:44:07]

lgtm

[Zhenyao Mo, 2015-01-27 21:48:28]

The CQ bit was checked by zmo@chromium.org

[commit-bot: I haz the power, 2015-01-27 21:49:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/878793002/100001

[commit-bot: I haz the power, 2015-01-27 22:28:15]

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

[commit-bot: I haz the power, 2015-01-27 22:28:15]

Try jobs failed on following builders:
  mac_chromium_rel_ng on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[Zhenyao Mo, 2015-01-27 22:30:09]

Failure is irrelevant.  Land with NOTRY=true

[Zhenyao Mo, 2015-01-27 22:30:14]

The CQ bit was checked by zmo@chromium.org

[commit-bot: I haz the power, 2015-01-27 22:31:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/878793002/100001

[commit-bot: I haz the power, 2015-01-27 22:34:00]

Committed patchset #1 (id:100001)

[commit-bot: I haz the power, 2015-01-27 22:34:44]

Patchset 1 (id:??) landed as
https://crrev.com/66f3677cddf1524f3dde9107c9aa9be1e432b911
Cr-Commit-Position: refs/heads/master@{#313380}