Awesome find.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/39a22dc8028987efa3ca24135922841d2d2d387c

commit 39a22dc8028987efa3ca24135922841d2d2d387c
Author: zmo <zmo@chromium.org>
Date: Fri Mar 25 21:23:37 2016

Turn on seamless cubemap by default on Desktop GL for ES3.

BUG= 597794 
TEST=deqp/texturefiltering_cube_*
R=piman@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win_optional_gpu_tests_rel

Review URL: https://codereview.chromium.org/1831833006

Cr-Commit-Position: refs/heads/master@{#383362}

[modify] https://crrev.com/39a22dc8028987efa3ca24135922841d2d2d387c/gpu/command_buffer/service/gles2_cmd_decoder.cc
[modify] https://crrev.com/39a22dc8028987efa3ca24135922841d2d2d387c/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0e22e7e8fe94d4f4deadcb2d6460e6a1ca38cd35

commit 0e22e7e8fe94d4f4deadcb2d6460e6a1ca38cd35
Author: zmo <zmo@chromium.org>
Date: Fri Mar 25 23:34:43 2016

Revert of Turn on seamless cubemap by default on Desktop GL for ES3. (patchset #3 id:40001 of https://codereview.chromium.org/1831833006/ )

Reason for revert:
This doesn't work on Mac Intel (most likely a driver bug)

Original issue's description:
> Turn on seamless cubemap by default on Desktop GL for ES3.
>
> BUG= 597794 
> TEST=deqp/texturefiltering_cube_*
> R=piman@chromium.org
> CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win_optional_gpu_tests_rel
>
> Committed: https://crrev.com/39a22dc8028987efa3ca24135922841d2d2d387c
> Cr-Commit-Position: refs/heads/master@{#383362}

TBR=piman@chromium.org,piman@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG= 597794 

Review URL: https://codereview.chromium.org/1840553002

Cr-Commit-Position: refs/heads/master@{#383405}

[modify] https://crrev.com/0e22e7e8fe94d4f4deadcb2d6460e6a1ca38cd35/gpu/command_buffer/service/gles2_cmd_decoder.cc
[modify] https://crrev.com/0e22e7e8fe94d4f4deadcb2d6460e6a1ca38cd35/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/da412cef54b24fb6013f6ec5ad89327bf1151b80

commit da412cef54b24fb6013f6ec5ad89327bf1151b80
Author: zmo <zmo@chromium.org>
Date: Mon Mar 28 23:54:20 2016

Turn on seamless cubemap by default on Desktop GL for ES3.

BUG= 597794 
TEST=deqp/texturefiltering_cube_*
R=piman@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel

Review URL: https://codereview.chromium.org/1840743004

Cr-Commit-Position: refs/heads/master@{#383615}

[modify] https://crrev.com/da412cef54b24fb6013f6ec5ad89327bf1151b80/gpu/command_buffer/service/gles2_cmd_decoder.cc
[modify] https://crrev.com/da412cef54b24fb6013f6ec5ad89327bf1151b80/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
[modify] https://crrev.com/da412cef54b24fb6013f6ec5ad89327bf1151b80/gpu/config/gpu_driver_bug_list_json.cc
[modify] https://crrev.com/da412cef54b24fb6013f6ec5ad89327bf1151b80/gpu/config/gpu_driver_bug_workaround_type.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/60714ca531b4b2f90ceed1a69ec44e0847998694

commit 60714ca531b4b2f90ceed1a69ec44e0847998694
Author: zmo <zmo@chromium.org>
Date: Wed Jun 22 18:09:28 2016

The disable_seamless_cube_map workaround should only apply to primary Intel.

On Mac retina where Intel is integrated and AMD/NVIDIA is discrete and is what
is used for WebGL, this workaround should not apply.

(This only affects WebGL2 on mac, so skip general try/cq bots)

BUG= 606074 , 597794 
TEST=mac gpu bots
R=bajones@chromium.org
NOTRY=true
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2081813002
Cr-Commit-Position: refs/heads/master@{#401344}

[modify] https://crrev.com/60714ca531b4b2f90ceed1a69ec44e0847998694/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py
[modify] https://crrev.com/60714ca531b4b2f90ceed1a69ec44e0847998694/gpu/config/gpu_driver_bug_list_json.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d0cf15e974aff5aaf53df87079969f181948a099

commit d0cf15e974aff5aaf53df87079969f181948a099
Author: zmo <zmo@chromium.org>
Date: Thu Jun 30 21:27:12 2016

Enable seamless cubemap on Mac Intel.

BUG= 597794 , 606074 
NOTRY=true
TEST=eanbled webgl2 conformance tests
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2113573002
Cr-Commit-Position: refs/heads/master@{#403294}

[modify] https://crrev.com/d0cf15e974aff5aaf53df87079969f181948a099/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py
[modify] https://crrev.com/d0cf15e974aff5aaf53df87079969f181948a099/gpu/config/gpu_driver_bug_list_json.cc