Chrome Version       : ToT

What steps will reproduce the problem?
1. Open Files app

What is the expected result?

No log spamming 

What happens instead of that?

The following is seen in /home/chronos/user/log/chrome:


[1729:2163:1206/152445.131414:WARNING:extension_protocols.cc(446)] Failed to GetPathForExtension: fbjakikfhfdajcamjleinfciajelkpek
[1729:2163:1206/152445.131512:WARNING:url_request_job_manager.cc(90)] Failed to map: chrome-extension://fbjakikfhfdajcamjleinfciajelkpek/cws_widget/cws_widget_container.css


Please provide any additional information below. Attach a screenshot if
possible.

It seems that the CSS file is no longer present?