Clicking on preferences page causes orange border around

[srirambv]

Test plan

1. Load up Brave on Windows or macOS
2. Visit about:preferences and click the security tab
3. Scroll all the way down and click inside the content area
4. You should not see an orange border (Windows) or a blue border (macOS)

Description

Clicking on preferences page causes orange border around

Steps to Reproduce

1. Upgrade to 0.22.701
2. Open about:preferences#security
3. Shows an orange border inside the frame, doesn't go away when clicked elsewhere

Actual result:

Expected result:
Should not show any frame

Reproduces how often:
100%

Brave Version

about:brave info:

Brave	0.22.701
V8	6.6.346.26
rev	339ffd6
Muon	6.0.7
OS Release	10.0.16299
Update Channel	Beta
OS Architecture	x64
OS Platform	Microsoft Windows
Node.js	7.9.0
Brave Sync	v1.4.2
libchromiumcontent	66.0.3359.139

Reproducible on current live release:
No

Additional Information

Happens on all about pages.

[btlechowski]

Verified on Ubuntu 17.10 x64

• 0.22.703 903b8d0
• libchromiumcontent 66.0.3359.139
• muon: 6.0.8

Verified on Windows x64

• 0.22.703 903b8d0
• libchromiumcontent 66.0.3359.139
• muon: 6.0.8

Verified with macOS 10.12.6 using

• 0.22.703 903b8d0
• muon 6.0.8
• libchromiumcontent 66.0.3359.139