If the CL is correct, perhaps the expectations on Nexus 5 should be updated?

I already updated: https://codereview.chromium.org/2629223004/

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

This is still failing on the Nexus 5 bot on the GPU fyi waterfall, e.g.:
https://build.chromium.org/p/chromium.gpu.fyi/builders/Android%20Release%20%28Nexus%205%29/builds/3790

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c3bf0abc5d0365c26bf617311492d48c4e46a301

commit c3bf0abc5d0365c26bf617311492d48c4e46a301
Author: ajuma <ajuma@chromium.org>
Date: Mon Jan 23 15:44:14 2017

Update WebGL conformance test expectations for Nexus 5

This partially reverts http://crrev.com/444877, since the tests
marked as passing by that CL are still failing on the Nexus 5
bot on the GPU fyi waterfall.

BUG=680764
NOTRY=true
TBR=zmo@chromium.org,yunchao.he@intel.com
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/2651703002
Cr-Commit-Position: refs/heads/master@{#445381}

[modify] https://crrev.com/c3bf0abc5d0365c26bf617311492d48c4e46a301/content/test/gpu/gpu_tests/webgl_conformance_expectations.py

I have no Nexus device. Could you assign this issue to Google guys, Zhenyao?

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available. If you change it back, also remove the "Hotlist-Recharge-Cold" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

I'll take a look