Clicking PDF link crashes tabs dramatically

[capouch]

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

• Describe the issue you encountered:
  Lately, clicking some PDF links crashes both the tab attempting to render the PDF as well as the tab(s) that spawned it.

• Platform (Win7, 8, 10? macOS? Linux distro?):
  Linux Slackware 14 x64

• Brave Version (revision SHA):
  0.15.0 71fb730

• Steps to reproduce:
  1.Click this link: https://electron.atom.io/apps/
  2.Scroll to listing for "Cove PDF" and click link
  3.On CovePDF page, scroll to bottom
  4. Click "Product Overview" crashes both tabs

• Actual result:
  Cascading crash

• Expected result:
  Rendering of PDF document

• 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. I can provide other workflows with the same result.

• Screenshot if needed:

• Any related issues:
  I try to run latest releases; this began about 2 weeks ago. Some PDFs render fine but others cause this behavior.
  
  

[bbondy]

Verified fixed by this:
#8422