Files opened locally shows Secure connection info

[srirambv]

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

Describe the issue you encountered:
Files opened from system shows Secure connection info

Expected behavior:
Should not show any connection info for files opened from system

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

• Brave Version (revision SHA):
  Brave 0.13.0
  rev 0c7a64d

• Steps to reproduce:

  1. Open any HTML file from local machine
  2. Shows fa-search icon, clicking on it shows insecure connection message
  3. Use fa-list similar to about pages so that it is not clickable and doesn't display any connection message

• Screenshot if needed:
  

• Any related issues: lock icon is sticky in URL bar when it should display search icon #6273

cc: @bradleyrichter