Examine source code of MyStreamingTab

{
  "manifest_version": 2,
  "name": "MyStreamingTab",
  "version": "1.2.12resigned1",
  "description": "MyStreamingTab",
  "homepage_url": "https://www.mystreamingtab.com",
  "icons": {
    "128": "icons/MyStreamingTab/ff-logo-icon_128.png"
  },
  "browser_action": {
    "default_icon": {
      "128": "icons/MyStreamingTab/ff-logo-icon_128.png"
    },
    "default_title": "Open MyStreamingTab New Tab",
    "browser_style": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>",
        "*://*.mystreamingtab.com/*"
      ],
      "all_frames": true,
      "js": [
        "js/contentScript.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "js/brand.js",
      "js/background.js"
    ]
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "permissions": [
    "tabs",
    "activeTab",
    "http://*/*",
    "https://*/*",
    "cookies"
  ],
  "web_accessible_resources": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d399d938-1df8-4759-bd62-7fa831ec3b9e}"
    }
  }
}