ui: Fix TEXTURE_RECTANGLE support in GLImage unit tests.

ui: Fix TEXTURE_RECTANGLE support in GLImage unit tests.

Sampling from texture with TEXTURE_RECTANGLE target requires
unnormalized texture coordinates. Prior to this change
all texture sampling would be done from a single texel instead
of the whole texture when using TEXTURE_RECTANGLE target.

This change also includes some cleanups to make GLImage unit
test code more consistent.

BUG=
TEST=gl_unittests --gtest_filter=GLImage*

Committed: https://crrev.com/b0e9fa1995c48896fb64499ce71768e90a8f7775
Cr-Commit-Position: refs/heads/master@{#375993}

[reveman, 2016-02-17 19:46:10]

reveman@chromium.org changed reviewers:
+ dcastagna@chromium.org

[Daniele Castagna, 2016-02-17 19:55:15]

lgtm

[Daniele Castagna, 2016-02-17 19:57:47]

The CQ bit was checked by dcastagna@chromium.org

[commit-bot: I haz the power, 2016-02-17 19:59:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1708733002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1708733002/1

[commit-bot: I haz the power, 2016-02-17 20:18:34]

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

[commit-bot: I haz the power, 2016-02-17 20:18:35]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[reveman, 2016-02-17 20:28:00]

reveman@chromium.org changed reviewers:
+ piman@chromium.org

[reveman, 2016-02-17 20:28:01]

+piman for ui/gl/OWNERS

[reveman, 2016-02-17 20:30:09]

The CQ bit was checked by reveman@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-02-17 20:34:30]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1708733002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1708733002/20001

[commit-bot: I haz the power, 2016-02-17 21:28:16]

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

[commit-bot: I haz the power, 2016-02-17 21:28:17]

Dry run: This issue passed the CQ dry run.

[piman, 2016-02-17 21:41:34]

lgtm

[reveman, 2016-02-17 21:43:33]

The CQ bit was checked by reveman@chromium.org

[reveman, 2016-02-17 21:43:34]

The patchset sent to the CQ was uploaded after l-g-t-m from
dcastagna@chromium.org
Link to the patchset: https://codereview.chromium.org/1708733002/#ps20001
(title: "update OWNERs file to inlcude gl_image test files")

[commit-bot: I haz the power, 2016-02-17 21:46:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1708733002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1708733002/20001

[commit-bot: I haz the power, 2016-02-17 21:58:21]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-02-17 21:59:41]

Description was changed from

==========
ui: Fix TEXTURE_RECTANGLE support in GLImage unit tests.

Sampling from texture with TEXTURE_RECTANGLE target requires
unnormalized texture coordinates. Prior to this change
all texture sampling would be done from a single texel instead
of the whole texture when using TEXTURE_RECTANGLE target.

This change also includes some cleanups to make GLImage unit
test code more consistent.

BUG=
TEST=gl_unittests --gtest_filter=GLImage*
==========

to

==========
ui: Fix TEXTURE_RECTANGLE support in GLImage unit tests.

Sampling from texture with TEXTURE_RECTANGLE target requires
unnormalized texture coordinates. Prior to this change
all texture sampling would be done from a single texel instead
of the whole texture when using TEXTURE_RECTANGLE target.

This change also includes some cleanups to make GLImage unit
test code more consistent.

BUG=
TEST=gl_unittests --gtest_filter=GLImage*

Committed: https://crrev.com/b0e9fa1995c48896fb64499ce71768e90a8f7775
Cr-Commit-Position: refs/heads/master@{#375993}
==========

[commit-bot: I haz the power, 2016-02-17 21:59:41]

Patchset 2 (id:??) landed as
https://crrev.com/b0e9fa1995c48896fb64499ce71768e90a8f7775
Cr-Commit-Position: refs/heads/master@{#375993}