Border radius on URLs

[arsalankhalid]

Fixes #10692

Reviewer: @bsclifton

Thoughts: I first tried going to the JS styles, as the docs identified that brave will be styled via js, and less is legacy, but I couldn't find that to fix the border-radius issue. Instead, i went to navigationBar.less and made the values arbitrary at 0, which seems to have fixed it. Please advise if too hacky, just trying to get my hands dirty and learn more, a great exercise all round.

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.

Test plan

See #10692

[arsalankhalid]

@bsclifton any thoughts on this, when you get the chance? :)

[bsclifton]

Works great! I tried a lot of scenarios (wide URL bar, title bar always shows, etc) and verified it always shows as expected.

Great work! 😄 And thanks for your first contribution 🎉

[bsclifton]

[arsalankhalid]

Awesome, just noticed that it got merged - thank you @bsclifton :)