Thanks for the report, will look at it today. I guess I broke it between patch sets at some point.

dalecurtis@xorax /d/code/chrome/src $ ./out/Release/content_browsertests --gtest_filter=*av1*
IMPORTANT DEBUGGING NOTE: each test is run inside its own process.
For debugging a test inside a debugger, use the
--gtest_filter=<your_test_name> flag along with either
--single_process (to run the test in one launcher/browser process) or
--single-process (to do the above, and also run Chrome in single-process mode).
Using sharding settings from environment. This is shard 0/1
Using 1 parallel jobs.
Note: Google Test filter = MediaCanPlayTypeTest.CodecSupportTest_av1
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from MediaCanPlayTypeTest, where TypeParam = 
[ RUN      ] MediaCanPlayTypeTest.CodecSupportTest_av1
[140018:140042:1121/115622.638691:ERROR:instance.cc(49)] Unable to locate service manifest for metrics
[140018:140042:1121/115622.638766:ERROR:service_manager.cc(889)] Failed to resolve service name: metrics

DevTools listening on ws://127.0.0.1:42157/devtools/browser/521a0d08-f2cf-4e74-93bd-a5cf26959a6f
[140046:140046:1121/115623.025326:ERROR:gpu_info.cc(103)] No active GPU found, returning primary GPU.
[140018:140042:1121/115623.684158:ERROR:instance.cc(49)] Unable to locate service manifest for metrics
[140018:140042:1121/115623.684215:ERROR:service_manager.cc(889)] Failed to resolve service name: metrics
[       OK ] MediaCanPlayTypeTest.CodecSupportTest_av1 (1571 ms)
[----------] 1 test from MediaCanPlayTypeTest (1571 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (1571 ms total)
[  PASSED  ] 1 test.


I can't repro this one. What are your build args?

is_debug = false
use_goma = true
goma_dir = "/usr/local/google/home/johannkoenig/chromium/goma/"

I get your output with
enable_av1_decoder = false

I picked this up from the bot:
https://ci.chromium.org/buildbot/tryserver.chromium.linux/linux_chromium_tsan_rel_ng/200329

https://luci-milo.appspot.com/buildbot/tryserver.chromium.linux/linux_chromium_asan_rel_ng/494983

asan and tsan ... but I'm not building a sanitized target locally for the repro.

Ah I think you don't have proprietary codecs enabled so my test was only passing because of video/mp4 and video/webm are kProbably. It wasn't taking the codec into account. Fix incoming.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b536391fe46113bac96028988b6fdd6447b4d215

commit b536391fe46113bac96028988b6fdd6447b4d215
Author: Dale Curtis <dalecurtis@chromium.org>
Date: Mon Nov 27 21:11:27 2017

Fix CodecSupportTest_av1 when proprietary_codecs=false

This test was not actually testing the right thing, by default
video/mp4 and video/webm with an unknown codec are reported as
"probably" being supported. Fix this so that av1 is recognized
and return "" if support is not compiled or enabled.

BUG= 787514 
TEST=updated browsertest

Change-Id: I14a62d5789b1def48413989eb859dcd1a878294b
Reviewed-on: https://chromium-review.googlesource.com/783330
Reviewed-by: Johann Koenig <johannkoenig@google.com>
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#519402}
[modify] https://crrev.com/b536391fe46113bac96028988b6fdd6447b4d215/content/browser/media/media_canplaytype_browsertest.cc
[modify] https://crrev.com/b536391fe46113bac96028988b6fdd6447b4d215/media/base/mime_util_internal.cc

Might still be a problem on mac:
https://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_ng/builds/598343

https://logs.chromium.org/v/?s=chromium%2Fbb%2Ftryserver.chromium.mac%2Fmac_chromium_rel_ng%2F598343%2F%2B%2Frecipes%2Fsteps%2Fcontent_browsertests__with_patch_%2F0%2Flogs%2FAV1MediaCanPlayTypeTest.CodecSupportTest_av1%2F0

[ RUN      ] AV1MediaCanPlayTypeTest.CodecSupportTest_av1
DevTools listening on ws://127.0.0.1:53223/devtools/browser/e318091e-b382-4e1a-91c3-9f059c3ee422
[3436:38147:1127/134808.489711:ERROR:instance.cc(49)] Unable to locate service manifest for metrics
[3436:38147:1127/134808.489822:ERROR:service_manager.cc(889)] Failed to resolve service name: metrics
[3437:771:1127/134808.549322:WARNING:vt_video_decode_accelerator_mac.cc(178)] Failed to create VTDecompressionSession: Error Domain=NSOSStatusErrorDomain Code=-8973 "The operation couldn?t be completed. (OSStatus error -8973.)" (codecOpenErr) (-8973)
[3437:771:1127/134808.551150:WARNING:vt_video_decode_accelerator_mac.cc(200)] Failed to create hardware VideoToolbox session
[3437:771:1127/134808.646947:ERROR:vt_video_encode_accelerator_mac.cc(517)]  VTCompressionSessionCreate failed: -12908
[3436:38147:1127/134808.646994:ERROR:service_manager.cc(889)] Failed to resolve service name: metrics
../../content/browser/media/media_canplaytype_browsertest.cc:605: Failure
      Expected: kNot
      Which is: ""
To be equal to: CanPlay("'video/mp4; codecs=\"av1\"'")
      Which is: "probably"
[  FAILED  ] AV1MediaCanPlayTypeTest.CodecSupportTest_av1, where TypeParam =  and GetParam() =  (590 ms)
[ RUN      ] AV1MediaCanPlayTypeTest.CodecSupportTest_av1
DevTools listening on ws://127.0.0.1:57646/devtools/browser/c7573fba-a379-40fe-9724-6c35e5a41b47
[6999:37891:1127/135342.912607:ERROR:instance.cc(49)] Unable to locate service manifest for metrics
[6999:37891:1127/135342.912711:ERROR:service_manager.cc(889)] Failed to resolve service name: metrics
[7000:771:1127/135342.987855:WARNING:vt_video_decode_accelerator_mac.cc(178)] Failed to create VTDecompressionSession: Error Domain=NSOSStatusErrorDomain Code=-8973 "The operation couldn?t be completed. (OSStatus error -8973.)" (codecOpenErr) (-8973)
[7000:771:1127/135342.989493:WARNING:vt_video_decode_accelerator_mac.cc(200)] Failed to create hardware VideoToolbox session
[6999:37891:1127/135343.058186:ERROR:instance.cc(49)] Unable to locate service manifest for metrics
[6999:37891:1127/135343.058230:ERROR:service_manager.cc(889)] Failed to resolve service name: metrics
[7000:771:1127/135343.058957:ERROR:vt_video_encode_accelerator_mac.cc(517)]  VTCompressionSessionCreate failed: -12908
../../content/browser/media/media_canplaytype_browsertest.cc:605: Failure
      Expected: kNot
      Which is: ""
To be equal to: CanPlay("'video/mp4; codecs=\"av1\"'")
      Which is: "probably"
[  FAILED  ] AV1MediaCanPlayTypeTest.CodecSupportTest_av1, where TypeParam =  and GetParam() =  (459 ms)
[ RUN      ] AV1MediaCanPlayTypeTest.CodecSupportTest_av1
DevTools listening on ws://127.0.0.1:57647/devtools/browser/feb45623-49cd-440e-921f-4881d96e9bdb
[7002:37891:1127/135343.451653:ERROR:instance.cc(49)] Unable to locate service manifest for metrics
[7002:37891:1127/135343.451731:ERROR:service_manager.cc(889)] Failed to resolve service name: metrics
[7003:771:1127/135343.520567:WARNING:vt_video_decode_accelerator_mac.cc(178)] Failed to create VTDecompressionSession: Error Domain=NSOSStatusErrorDomain Code=-8973 "The operation couldn?t be completed. (OSStatus error -8973.)" (codecOpenErr) (-8973)
[7003:771:1127/135343.521734:WARNING:vt_video_decode_accelerator_mac.cc(200)] Failed to create hardware VideoToolbox session
[7003:771:1127/135343.583984:ERROR:vt_video_encode_accelerator_mac.cc(517)]  VTCompressionSessionCreate failed: -12908
[7002:37891:1127/135343.584031:ERROR:instance.cc(49)] Unable to locate service manifest for metrics
[7002:37891:1127/135343.584077:ERROR:service_manager.cc(889)] Failed to resolve service name: metrics
../../content/browser/media/media_canplaytype_browsertest.cc:605: Failure
      Expected: kNot
      Which is: ""
To be equal to: CanPlay("'video/mp4; codecs=\"av1\"'")
      Which is: "probably"
[  FAILED  ] AV1MediaCanPlayTypeTest.CodecSupportTest_av1, where TypeParam =  and GetParam() =  (418 ms)
[ RUN      ] AV1MediaCanPlayTypeTest.CodecSupportTest_av1
DevTools listening on ws://127.0.0.1:57648/devtools/browser/8adcf149-5fa8-4956-a924-2d1dd6a98ae1
[7005:37891:1127/135343.948217:ERROR:instance.cc(49)] Unable to locate service manifest for metrics
[7005:37891:1127/135343.948322:ERROR:service_manager.cc(889)] Failed to resolve service name: metrics
[7006:771:1127/135344.011340:WARNING:vt_video_decode_accelerator_mac.cc(178)] Failed to create VTDecompressionSession: Error Domain=NSOSStatusErrorDomain Code=-8973 "The operation couldn?t be completed. (OSStatus error -8973.)" (codecOpenErr) (-8973)
[7006:771:1127/135344.013180:WARNING:vt_video_decode_accelerator_mac.cc(200)] Failed to create hardware VideoToolbox session
[7005:37891:1127/135344.085118:ERROR:instance.cc(49)] Unable to locate service manifest for metrics
[7005:37891:1127/135344.085179:ERROR:service_manager.cc(889)] Failed to resolve service name: metrics
[7006:771:1127/135344.085446:ERROR:vt_video_encode_accelerator_mac.cc(517)]  VTCompressionSessionCreate failed: -12908
../../content/browser/media/media_canplaytype_browsertest.cc:605: Failure
      Expected: kNot
      Which is: ""
To be equal to: CanPlay("'video/mp4; codecs=\"av1\"'")
      Which is: "probably"
[  FAILED  ] AV1MediaCanPlayTypeTest.CodecSupportTest_av1, where TypeParam =  and GetParam() =  (461 ms)

Ah, sill me, used defined() with a BUILDFLAG.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/65da292b4803ebc0c1279bf7ad817d0d18926926

commit 65da292b4803ebc0c1279bf7ad817d0d18926926
Author: Dale Curtis <dalecurtis@chromium.org>
Date: Tue Nov 28 00:23:09 2017

Don't use defined() for a BUILDFLAG() in canPlayType browsertest.

Also, just use the kPropProbably expectation which already sets
this up correctly.

BUG= 787514 
TEST=none

Change-Id: I44f16049ac94f574f272a2e4d9a1061c24181b59
Reviewed-on: https://chromium-review.googlesource.com/792097
Reviewed-by: Johann Koenig <johannkoenig@google.com>
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#519473}
[modify] https://crrev.com/65da292b4803ebc0c1279bf7ad817d0d18926926/content/browser/media/media_canplaytype_browsertest.cc