View certificate option not shown on all insecure connections

[srirambv]

• Did you search for similar issues before submitting this one?
  Yes

• Describe the issue you encountered:
  View certificate option not shown on all insecure connections

• Platform (Win7, 8, 10? macOS? Linux distro?):
  All

• Brave Version (revision SHA):
  Brave 0.15.314
  rev 75ffa36
  Muon 3.0.202

• Steps to reproduce:

  1. Visit https://mixed-scripts.badssl.com
  2. Click on connection info button and click on Load unsafe scripts, ensure page shows red
  3. Click on connection info, shows View certificate option
  4. Open http://cnn.com
  5. Click on connection info, no option for View Certificate is shown, only connection information is displayed

• Actual result:
  View certificate option not shown on all insecure connections

• Expected result:
  Should show view certificate option for all insecure conections

• Will the steps above reproduce in a fresh profile? If not what other info can be added?
  Yes

• Is this an issue in the currently released version?
  Yes

• Can this issue be consistently reproduced?
  Yes

• Extra QA steps:
  1.
  2.
  3.

• Screenshot if needed:
  

• Any related issues:
  #8530
  cc: @diracdeltas @darkdh

[darkdh]

http protocol doesn't have any certificates