https://stainless.corp.google.com/search?view=matrix&row=build&col=test&first_date=2018-08-10&last_date=2018-08-23&test=video_ChromeHWDecodeUsed&build=R69-*&board=chell&exclude_cts=false&exclude_not_run=false&exclude_non_release=true&exclude_au=true&exclude_acts=true&exclude_retried=true&exclude_non_production=false

In histogram verification, it looks for bucket_pattern with 100%.
(https://cs.corp.google.com/chromeos_public/src/third_party/autotest/files/client/cros/video/histogram_verifier.py?q=histogram_verifier&sq=package:%5Echromeos_(internal%7Cpublic)$&dr&l=66)

After first time login, no histogram is expected for Media.GpuVideoDecoderInitializeStatus.  But from R69-10895.28.0, it is generating some histogram.

This is causing verification failure.

https://00e9e64bac1cc2da0cf805414adb9d7cb5b39cc5ae2dbe7340-apidata.googleusercontent.com/download/storage/v1/b/chromeos-autotest-results/o/228373816-chromeos-test%2Fchromeos4-row12-rack10-host7%2Fdebug%2Fclient.0.DEBUG?qk=AD5uMEtWvBY1IwI_3hF0DinUh44uRGjTAgbYWUlM4YUWDp3XMyVEO6Vb8AU4cbUDIGC8esgfnu-JA_wnQOh-iJJjrcI4B2w6qb2aY3B-cgSP0kRbv4aN2wcjxVCb8A-RMrQTNhqGsIWl9Vnni2Yw9eoqKBcZFXfQwezZ6fnuFxqlU7VjHOW6C2E3aKfFIsHCzySgjAaU1naPRvBl_yi0abtqcOGITxdC3p1qppHP39RH_kZzGPwd-BBY6GjGocbGFzbVGJaVoYBYIg4SmdIph9VnW89eFkDrKiRmfRm0ZzLKlu-A-7-2kflt9f45QxoBlb5wKldt8PoRtgqJlZHAbsE1z3CW9A_TNhp9TuHsnSJvAcNq9MJatebpuAdo4svcmLtn03uRAwgN_5nrWKJ2mVKYBgYlsiBwfnSYqw_43Yz7J31S27yiJ8bRYIJKR7kNc9C-nu28KfxG-EGN7D9AXdeaP-dLFWYLQuEBQWgAQ_s7dp2P7M2fxQW2SyU4r2bDsmDni8z2qP3fdpYjyvdxE2xlPWxxyjVyj6rCnJt419dr7qOCBwEiKaakUkSXeNTmch745yMB4aBtRQlbUwkVNgJ-UtOa0gK8EO_nZauV5ZOWY7OrKmGCwWnqJecbg55mKmQmUOTvA23lLbjtjFLFNT-J_ylH1v2IqVbcaYIuSDwsx_Gq7-ABpXA8XtO_E4Evk1Andh0hJdlwaWpNl_3BKJg24NsZKvJRudgn_MazpXDraW_ATykogXNlvPDM0iEbaYOlSHTb_MivRvthHH_hX0LDs6Fn_Ohh0qvb4_jaXSOO_vKsYsiCkIqXp2Z5RzWgNFdsR4WilovkUKO_zfGHJNX1iF1oDo549g

8/17 06:51:05.967 DEBUG|histogram_verifier:0028| chrome://histograms/Media.GpuVideoDecoderInitializeStatus:
Histogram: Media.GpuVideoDecoderInitializeStatus recorded 11 samples, mean = 13.6 (flags = 0x41)
0   -------O                                                                  (1 = 9.1%)
1   ... 
15  ------------------------------------------------------------------------O (10 = 90.9%) {9.1%}