Below mentioned unit_test fails in Win, Win64 and Linux official.desktop trunk builders.

MSE_Widevine_Mojo/EncryptedMediaTest.PolicyCheck/0

Link to the Builder
===================
https://uberchromegw.corp.google.com/i/official.desktop.continuous/builders/linux64%20trunk/builds/2274

Link to the log file
====================
https://uberchromegw.corp.google.com/i/official.desktop.continuous/builders/linux64%20trunk/builds/2274/steps/browser_tests/logs/MSE_Widevine_Mojo_EncryptedMediaTest.PolicyCheck_0

Error Log
=========
MSE_Widevine_Mojo/EncryptedMediaTest.PolicyCheck/0 (run #1):
[ RUN      ] MSE_Widevine_Mojo/EncryptedMediaTest.PolicyCheck/0
Xlib:  extension "RANDR" missing on display ":9".
[22859:22859:0725/132435.648788:WARNING:password_store_factory.cc(255)] Using basic (unencrypted) store for password storage. See https://chromium.googlesource.com/chromium/src/+/master/docs/linux_password_storage.md for more information about password storage options.
[22859:22859:0725/132435.692489:WARNING:browser_main_loop.cc(276)] <unknown>: AT-SPI: Could not obtain desktop path or name

The test is flaky, hence unable to get the regression information.

Flaky Information
==================
Build ranges checked for flakiness: 2225 : 2274
Number of times failed: 13 times out of 48 builds.Suspected CL

First Bad Build: https://uberchromegw.corp.google.com/i/official.desktop.continuous/builders/linux64%20trunk/builds/2260
Last Good Build: https://uberchromegw.corp.google.com/i/official.desktop.continuous/builders/linux64%20trunk/builds/2259

This is the closest patch which could have caused the failure.

https://chromium.googlesource.com/chromium/src/+/ada25fea214db0d07efb6d99f8a97e5d39c9960e

Assigning to the CL owner as well as the sheriff to either disable of fix the test.