Below mentioned browsertests fails in Linux official.desktop builder.

PageLoadMetricsBrowserTest.CSSTiming

Link to the Builder
===================
https://uberchromegw.corp.google.com/i/official.desktop/builders/linux64/builds/437

Link to the log file
====================
https://uberchromegw.corp.google.com/i/official.desktop/builders/linux64/builds/437/steps/browser_tests/logs/PageLoadMetricsBrowserTest.CSSTiming

Error Log
=========
Histogram "PageLoad.CSSTiming.ParseAndUpdate.BeforeFirstContentfulPaint" does not exist.
[  FAILED  ] PageLoadMetricsBrowserTest.CSSTiming, where TypeParam =  and GetParam() =  (1323 ms)

Regression Information
======================
First Bad Build: https://uberchromegw.corp.google.com/i/official.desktop/builders/linux64/builds/404
Last Good Build: https://uberchromegw.corp.google.com/i/official.desktop/builders/linux64/builds/402

Flaky Information
==================
Build ranges checked for flakiness: 388 : 437
Number of times failed: 4 times out of 42 builds.

Suspected CL
============

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

https://codereview.chromium.org/2948323002

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