Browser crypto wallet still gets detected as Metamask on websites

[srirambv]

Description

Browser crypto wallet still gets detected as Metamask on websites

Steps to Reproduce

1. Enable crypto wallet on browser
2. Visit https://cryptokitties.co/
3. Site detects wallet as Metamask

Actual result:

Also has Metamask icon in the connect popup window
Learn more links to https://medium.com/metamask/introducing-privacy-mode-42549d4870fa
Once signed in Shows Connected wallet: Metamask

Expected result:

No Metamask branding anywhere and sites shouldnt detect it as Metamask

Reproduces how often:

Easy

Brave version (brave://version info)

Brave	0.70.97 Chromium: 77.0.3865.65 (Official Build) beta (32-bit)
Revision	87a331a3169cab563505fb44011058b904011ba1-refs/branch-heads/3865@{#726}
OS	Windows 10 OS Version 1803 (Build 17134.523)

Version/Channel Information:

• Can you reproduce this issue with the current release? N/A
• Can you reproduce this issue with the beta channel? Yes
• Can you reproduce this issue with the dev channel? Yes
• Can you reproduce this issue with the nightly channel? Yes

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields?
• Does the issue resolve itself when disabling Brave Rewards?
• Is the issue reproducible on the latest version of Chrome?

Miscellaneous Information:

cc: @ryanml @bbondy @tomlowenthal

[bbondy]

At least for now I don't think we're going to add an isBrave type of function. Websites should not assume and they should feature detect instead of using something like a user agent.