Chrome Extension: base64 decode query string data

chrome-extension.js

/**
 * This is the beginnings of a Chrome Extension that will extend the Chrome Developer Tools Network panel using
 *  the webRequest and devTools APIs.
 * This will be very useful for debugging the calls that the Mixpanel snippet makes out when you make
 *  Mixpanel API calls in your code
 */

function d64json(data){console.info(JSON.stringify(JSON.parse(atob(data)),null,2));}

/*
 * Then call the d64json function with your pasted in data from a Mixpanel call from the query string parameter named `data`
 * 
 * d64json("eyIkc2V0IjogeyIkb3MiOiAiTWFjIE9TIFgiLCIkYnJvd3NlciI6ICJDaHJvbWUiLCIkYnJvd3Nlcl92ZXJzaW9uIjogNDcsIiRpbml0aWFsX3JlZmVycmVyIjogIiRkaXJlY3QiLCIkaW5pdGlhbF9yZWZlcnJpbmdfZG9tYWluIjogIiRkaXJlY3QiLCJwcm9kdWN0IjogIkJ1c2luZXNzX1F1YXJ0ZXJseV8xIiwiJGVtYWlsIjogImphc29uKzIwMTUxMjA5KzExMjFAZ2xpZmZ5LmNvbSJ9LCIkdG9rZW4iOiAiZTdhZTg3MjZlYzliZjIyODhlMDA3ODczOTY0OWVhOWYiLCIkZGlzdGluY3RfaWQiOiA5MDAxMn0=");
 *
 * Results in:
 * {
 *   "$set": {
 *     "$os": "Mac OS X",
 *     "$browser": "Chrome",
 *     "$browser_version": 47,
 *     "$initial_referrer": "$direct",
 *     "$initial_referring_domain": "$direct",
 *     "product": "Business_Quarterly_1",
 *     "$email": "jason+20151209+1121@gliffy.com"
 *   },
 *   "$token": "e7ae8726ec9bf2288e0078739649ea9f",
 *   "$distinct_id": 90012
 * }

Documentation to read:
Getting Started: Building a Chrome Extension
Extending DevTools
Use the chrome.devtools.network API to retrieve the information about network requests displayed by the Developer Tools in the Network panel.
chrome.webRequest

Placed on hold for now as I have enabled debug mode for non-production with Mixpanel:

mixpanel.init('ID', {debug:true});