Examine source code of DP-Privacy

{
  "manifest_version": 2,
  "name": "DP-Privacy",
  "version": "1.2.1resigned1",
  "description": "Blurs the webpage when the mouse exits the view.",
  "applications": {
    "gecko": {
      "id": "dp-privacy@dp-privacy.com",
      "strict_min_version": "42.0"
    }
  },
  "icons": {
    "24": "icons/eye-off-dark-24.png",
    "48": "icons/eye-off-dark-48.png",
    "96": "icons/eye-off-dark-96.png"
  },
  "background": {
    "page": "background/bg-page.html"
  },
  "browser_action": {
    "browser_style": true,
    "default_title": "DP Privacy Settings",
    "default_popup": "browser_action/ba-popup.html",
    "theme_icons": [
      {
        "light": "icons/gear-light.svg",
        "dark": "icons/gear-dark.svg",
        "size": 32
      }
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_scripts/cs-dpprivacy.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "styles/*.css",
    "icons/*"
  ],
  "permissions": [
    "<all_urls>",
    "tabs",
    "activeTab",
    "storage"
  ]
}