Linux doesn't list Widevine component module in brave://components

[srirambv]

Description

Linux doesn't list Widevine component module in brave://components

Steps to Reproduce

1. Install latest dev version
2. Login to Netflix
3. Click Allow on both prompts to instal, run and restart browser
4. Play any video on Netflix after restart
5. Open brave://components, Widvine component is not listed

Actual result:

Expected result:

Should list it similar to Windows/macOS

Reproduces how often:

Easy

Brave version (brave://version info)

Brave	0.64.30 Chromium: 73.0.3683.75 (Official Build) dev(64-bit)
Revision	909ee014fcea6828f9a610e6716145bc0b3ebf4a-refs/branch-heads/3683@{#803}
OS	Linux

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds?
  Yes

Website problems only:

• Does the issue resolve itself when disabling Brave Shields?
  N/A
• Is the issue reproducible on the latest version of Chrome?
  N/A

Additional Information

cc: @simonhong