Add Crypto.com widget to the NTP

[ryanml]

Design

https://www.figma.com/file/VcjAJx6ij0pb3zxASg30b5/Crypto.com-Widget?node-id=53%3A2

Specification for testing:
https://docs.google.com/document/d/1IILOjZjE6KxaV1IFQRBFF9cO2by0qgvJDiJMWrIVsf4/edit#heading=h.gzlrh4sgxpw1

[srirambv]

Verification passed on

Brave	1.16.67 Chromium: 86.0.4240.111 (Official Build) (64-bit)
Revision	b8c36128a06ebad76af51591bfec980224db5522-refs/branch-heads/4240@{#1290}
OS	Linux / Windows 10 OS Version 1809 (Build 17763.1518) / macOS Version 10.15.7 (Build 19H2)

Verified Crypto.com widget is added to the stack by default on a clean profile

Linux	Windows	macOS

Verified selecting `Crypto.com` widget shows opt-in state with BTC as default listed currency

Linux	Windows	macOS

Verified clicking on show price in opt-in view shows the current market price and 24hr % change for BTC

Linux	Windows	macOS

Verified clicking on `Buy` button or `Buy Bitcoin` button in opt-in view opens up the landing page in a new tab

https://auth.crypto.com/users/sign_up?utm_campaign=Brave%3AWW-en%3ATrading-Widget_MVP_InitialWidgetState_BuyButton_Top&utm_content=MVP_InitialWidgetState_BuyButton_Top&utm_medium=Trading+Widget&utm_source=Brave

Verified clicking on `View Crypto.com Markets` open up the top movers (assets view)

Linux	Windows	macOS

Verified clicking on any of the listed tokens, opens up individual tokens 7d graph and lists 24hr volume in USD and supported trading pairs for individual asset

Linux	Windows	macOS

Verified clicking on any of the trading pairs on any of the asset opens a landing page in a new tab and loads

https://auth.crypto.com/users/sign_up?utm_campaign=Brave%3AWW-en%3ATrading-Widget_MVP_InitialWidgetState_BuyButton_Top&utm_content=MVP_InitialWidgetState_BuyButton_Top&utm_medium=Trading+Widget&utm_source=Brave

Verified `Crypto.com` widget can be disabled via either of the following ways

Linux (Widget menu)	Windows (Widget menu)	macOS (Widget menu)

Linux (Add cards in dashboard)	Windows (Add cards in dashboard)	macOS (Add cards in dashboard)

Linux (New Tab page settings)	Windows (New Tab page settings)	macOS (New Tab page settings)

• Verified widget retains the state between disable and enabled

  • If the widget is in opt-in state and then disabled, re-adding the widget still shows it in opt-in state
  • If the widget is already in the market view (tokens), disable and re-adding the widget doesn't go back to opt-in state but retains the market view

• Verified the price value is updated every 30 secs because of which value will always be a little off compared to the market value shown on website
  

Verified when the network is disconnected/disrupted, balance and price chart is removed. Re-connecting to network updates the trade value and chart after 30sec

Linux	Windows	macOS

• Verified upgrading from an older build in supported regions widget is automatically added to the stack

Verified for unsupported regions, there is no `Crypto.com` widget shown on a clean install or on upgrade

Linux (Japanese)	Windows (Nepali)	macOS (Vietnamese)

Linux (Add cards in dashboard)	Windows (Add cards in dashboard)	macOS (Add cards in dashboard)

Linux (New Tab page settings)	Windows (New Tab page settings)	macOS (New Tab page settings)

• Verified widget is English only even for non-EN locales
• Verified widget is not available on Private windows/Guest/Tor windows
• Verified clearing data doesn't reset widget state to opt-in state