Unable to view HTTPS certificate (0.15.2, FC25 Gnome)

[chotaire]

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

• Describe the issue you encountered:
  When trying to view a certificate (CTRL+SHIFT+I), then click on "View certificate", no window opens.

• Platform (Win7, 8, 10? macOS? Linux distro?):
  Linux Fedora 25, Gnome

• Brave Version (revision SHA):
  0.15.2

• Steps to reproduce:

  1. Go to a HTTPS website
  2. Hit CTRL+SHIFT+I
  3. Click on "view certificate"

• Actual result:
  Nothing happens

• Expected result:
  Open a Popup and show certificate

• 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

[bsclifton]

When we implemented show certificate, we only did so for macOS and Windows. You can track the status for Linux with #7669