Fingerprinting protection breaks uphold verification process

[bsclifton]

Reported here: https://www.reddit.com/r/BATProject/comments/8jsk19/fairly_important_bug/

I had to verify on uphold last night due to hitting their unregistered trading limit. Brave gave me the swirling loading sign of perpetuity and would not allow me to upload my pictures on step 2 of verification. This is pretty major as uphold is supposedly one of the trading platforms we suggest new users use, and it needs to work seamlessly with Brave

Steps to reproduce

1. Create an uphold account
2. Attempt to verify account (ensure Fingerprinting protection is set to Block third party fingerprinting
3. Get stuck on step 2 (photo upload)

[srirambv]

This only works for a clean install. Tried auto update from 0.22.710 prev beta version. Upon upgrade there is no site exception added.

cc: @diracdeltas

[LaurenWags]

Verified with macOS 10.12.6 using

• 0.22.719 a9e0956
• muon 6.0.12
• libchromiumcontent 66.0.3359.170
• verified clean install and update

Verified on Windows x64 with

• 0.22.719 a9e0956
• muon 6.0.12
• libchromiumcontent 66.0.3359.170
• verified clean install and update

Verified on Ubuntu 17.10 x64

• 0.22.719 a9e0956
• muon 6.0.12
• libchromiumcontent 66.0.3359.170