Do these fail on all GPUs on macOS? Is this a new regression?

Does this block Issue 662644?

Can't repro on macOS 10.12.2, Intel HD 6000, Canary 57.0.2977.0

Yes, but these two tests failed on Mac Nvidia/AMD according to the trybots. I have updated the WebGL 2 CTS expectations at https://codereview.chromium.org/2645723004/.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/851dbdc2f722f82abffcf07ce6d72a85e8bb382b

commit 851dbdc2f722f82abffcf07ce6d72a85e8bb382b
Author: yunchao.he <yunchao.he@intel.com>
Date: Thu Jan 19 23:08:01 2017

update webgl cts expectations

BUG= 679682 ,  679684 , 680764
CQ_INCLUDE_TRYBOTS=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;master.tryserver.chromium.android:android_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2645723004
Cr-Commit-Position: refs/heads/master@{#444877}

[modify] https://crrev.com/851dbdc2f722f82abffcf07ce6d72a85e8bb382b/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py
[modify] https://crrev.com/851dbdc2f722f82abffcf07ce6d72a85e8bb382b/content/test/gpu/gpu_tests/webgl_conformance_expectations.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b4b2248909ab2dfa203f32ac1a33acb7aa66ed0c

commit b4b2248909ab2dfa203f32ac1a33acb7aa66ed0c
Author: yunchao.he <yunchao.he@intel.com>
Date: Thu Feb 16 03:36:11 2017

update webgl2 expectations

BUG= 679682 
CQ_INCLUDE_TRYBOTS=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;master.tryserver.chromium.android:android_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2693263002
Cr-Commit-Position: refs/heads/master@{#450863}

[modify] https://crrev.com/b4b2248909ab2dfa203f32ac1a33acb7aa66ed0c/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py

Not sure if you've noticed my comment on the CL, so repeating here.
This still fails on https://build.chromium.org/p/chromium.gpu.fyi/builders/Mac%20Pro%20Release%20%28AMD%29

Please disable the test on this GPU: ('amd', 0x679e)

Yes, I have noticed your comment,@ynovikov. I will submit another one to update the webgl expectation. 

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/da65451943c5caf1bb5772024c336ea7e524d3fb

commit da65451943c5caf1bb5772024c336ea7e524d3fb
Author: ccameron <ccameron@chromium.org>
Date: Fri Feb 17 06:49:23 2017

Revert of update webgl2 expectations (patchset #1 id:1 of https://codereview.chromium.org/2693263002/ )

Reason for revert:
These tests are failing on GPU FYI bots.

https://build.chromium.org/p/chromium.gpu.fyi/builders/Mac%20Pro%20Release%20%28AMD%29/builds/94

Original issue's description:
> update webgl2 expectations
>
> BUG= 679682 
> CQ_INCLUDE_TRYBOTS=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;master.tryserver.chromium.android:android_optional_gpu_tests_rel
>
> Review-Url: https://codereview.chromium.org/2693263002
> Cr-Commit-Position: refs/heads/master@{#450863}
> Committed: https://chromium.googlesource.com/chromium/src/+/b4b2248909ab2dfa203f32ac1a33acb7aa66ed0c

TBR=zmo@chromium.org,kbr@chromium.org,qiankun.miao@intel.com,yunchao.he@intel.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG= 679682 

Review-Url: https://codereview.chromium.org/2700043003
Cr-Commit-Position: refs/heads/master@{#451253}

[modify] https://crrev.com/da65451943c5caf1bb5772024c336ea7e524d3fb/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/35091c96d3a0e1543978414ffc1dc2d28bc3b759

commit 35091c96d3a0e1543978414ffc1dc2d28bc3b759
Author: yunchao.he <yunchao.he@intel.com>
Date: Fri Feb 17 17:44:19 2017

Update WebGL 2 expectations

BUG= 679682 
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

Review-Url: https://codereview.chromium.org/2703733003
Cr-Commit-Position: refs/heads/master@{#451334}

[modify] https://crrev.com/35091c96d3a0e1543978414ffc1dc2d28bc3b759/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py

This issue only exists on Mac Pro with AMD GPU now. I will not look into AMD specific issue. And we may have no device either. So please assign this one to other guy.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1733d120eb79e2d8d49b18892e60ee1297f646f7

commit 1733d120eb79e2d8d49b18892e60ee1297f646f7
Author: zmo <zmo@chromium.org>
Date: Thu Jun 08 23:24:48 2017

Update WebGL2 conformance test expectations for Mac bots.

BUG= 598930 , 617290 , 618464 ,630800, 641149 , 643866 , 645298 , 646182 , 654187 , 663188 ,665197, 665656 , 676848 , 679682 , 679684 , 679686 , 679687 , 679689 , 679690 , 679691 , 680278 , 684903 
TEST=mac bots on GPU FYI waterfall
TBR=kbr@chromium.org,kainino@chromium.org
NOTRY=true
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

Review-Url: https://codereview.chromium.org/2931993002
Cr-Commit-Position: refs/heads/master@{#478121}

[modify] https://crrev.com/1733d120eb79e2d8d49b18892e60ee1297f646f7/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py