[gpu] Fix feature detection for ext_texture_norm16.

[gpu] Fix feature detection for ext_texture_norm16.

ext_texture_norm16 is supported on desktop core profile (OSX and Linux)
and (ANGLE on Windows). The GL version should be atleast above OpenGL 3.0
or using GL_ARB_texture_rg extension, if Chrome happens to fall back to the
OpenGL compatibility profile (which is feature level 2.1 on macOS).

BUG=624436
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

[riju_, 2017-06-13 13:32:55]

Description was changed from

==========
[gpu] Fix feature detection for ext_texture_norm16.

ext_texture_norm16 is supported on desktop core profile (OSX and Linux)
and (ANGLE on Windows). The GL version should be atleast above OpenGL 3.0
or using GL_ARB_texture_rg extension, if Chrome happens to fall back to the
OpenGL compatibility profile (which is feature level 2.1 on macOS).

BUG=624436
==========

to

==========
[gpu] Fix feature detection for ext_texture_norm16.

ext_texture_norm16 is supported on desktop core profile (OSX and Linux)
and (ANGLE on Windows). The GL version should be atleast above OpenGL 3.0
or using GL_ARB_texture_rg extension, if Chrome happens to fall back to the
OpenGL compatibility profile (which is feature level 2.1 on macOS).

BUG=624436
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
==========

[riju_, 2017-06-13 13:33:45]

The CQ bit was checked by rijubrata.bhaumik@intel.com to run a CQ dry run

[commit-bot: I haz the power, 2017-06-13 13:34:00]

Dry run: CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-06-13 14:51:45]

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

[commit-bot: I haz the power, 2017-06-13 14:51:47]

Dry run: This issue passed the CQ dry run.

[riju_, 2017-06-13 14:55:13]

rijubrata.bhaumik@intel.com changed reviewers:
+ kbr@chromium.org

[riju_, 2017-06-13 14:55:14]

kbr@ : PTAL. 
As requested by you in:
https://codereview.chromium.org/2920793005/diff/120001/ui/gl/gl_image_io_surf...

[Ken Russell (switch to Gerrit), 2017-06-13 23:51:03]

Appreciate your eagerness to help here, but this change isn't necessary.

https://codereview.chromium.org/2933313003/diff/1/gpu/command_buffer/service/...
File gpu/command_buffer/service/feature_info.cc (right):

https://codereview.chromium.org/2933313003/diff/1/gpu/command_buffer/service/...
gpu/command_buffer/service/feature_info.cc:1317:
extensions.Contains("GL_ARB_texture_rg"))) ||
This isn't necessary. Looking more deeply, GL_ARB_texture_rg was folded into
OpenGL 3.0, and is_desktop_core_profile implies a minimum of OpenGL 3.2.

[riju_, 2017-06-14 07:18:22]

On 2017/06/13 23:51:03, Ken Russell wrote:
> Appreciate your eagerness to help here, but this change isn't necessary.
> 
>
https://codereview.chromium.org/2933313003/diff/1/gpu/command_buffer/service/...
> File gpu/command_buffer/service/feature_info.cc (right):
> 
>
https://codereview.chromium.org/2933313003/diff/1/gpu/command_buffer/service/...
> gpu/command_buffer/service/feature_info.cc:1317:
> extensions.Contains("GL_ARB_texture_rg"))) ||
> This isn't necessary. Looking more deeply, GL_ARB_texture_rg was folded into
> OpenGL 3.0, and is_desktop_core_profile implies a minimum of OpenGL 3.2.

Thanks for the comment. I will close this issue.