Examine source code of Pinned MEGA Cloud

{
  "manifest_version": 2,
  "name": "Pinned MEGA Cloud",
  "version": "2.0",
  "description": "Opens new tab with mega.nz or switches to it if it's already open.",
  "icons": {
    "16": "icons/icon_16.png",
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": {
      "32": "icons/icon_32.png"
    },
    "default_title": "MEGA",
    "default_area": "navbar"
  },
  "background": {
    "scripts": [
      "mega.js"
    ]
  }
}