The content_browsertests WebRtcBrowserTest.CanSetupH264VideoCallOnSupportedDevice failure also sounds related.

dalecurtis, could your https://chromium-review.googlesource.com/1060237 have anything to do with this?

Hmm, seems https://chromium-review.googlesource.com/c/chromium/src/+/1062802 was supposed to fix this, but the failures remain on the bot.

Ah, I didn't see the other failures. I'll fix those shortly.

This turned out to be a bit involved, but CL here https://chromium-review.googlesource.com/c/chromium/src/+/1064534

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/edcd62b757dd40cdf54db1eedddff32f58fe515c

commit edcd62b757dd40cdf54db1eedddff32f58fe515c
Author: Dale Curtis <dalecurtis@chromium.org>
Date: Thu May 17 22:54:49 2018

Fix Android MediaCodec decoders to work without proprietary codecs.

This extends both the MediaCodecVideoDecoder and
AndroidVideoDecodeAccelerator tests to run for all codecs supported
by the current build configuration (vp8, vp9, h264 in best case).

This is a vast expansion in test coverage, which is great, but it
also reveals a few weird spots in MCVD. E.g., there are several of
the H264 tests which seem like they should work for all codecs.

BUG= 843914 
TEST=it's all tests!

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: I4d6abfcb071a9cf1f2f0bd5a2f3ceab2fdd11c18
Reviewed-on: https://chromium-review.googlesource.com/1064534
Reviewed-by: Frank Liberato <liberato@chromium.org>
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#559717}
[modify] https://crrev.com/edcd62b757dd40cdf54db1eedddff32f58fe515c/media/gpu/android/android_video_decode_accelerator.cc
[modify] https://crrev.com/edcd62b757dd40cdf54db1eedddff32f58fe515c/media/gpu/android/android_video_decode_accelerator.h
[modify] https://crrev.com/edcd62b757dd40cdf54db1eedddff32f58fe515c/media/gpu/android/android_video_decode_accelerator_unittest.cc
[modify] https://crrev.com/edcd62b757dd40cdf54db1eedddff32f58fe515c/media/gpu/android/media_codec_video_decoder_unittest.cc