Examine source code of Kittyfy

{
  "manifest_version": 2,
  "name": "Kittyfy",
  "description": "Remove all the garbage and replace it with cute kittens",
  "version": "1.0.4resigned1",
  "browser_action": {
    "default_icon": {
      "16": "images/icon_black_16.png",
      "32": "images/icon_black_32.png",
      "64": "images/icon_black_64.png"
    },
    "default_popup": "popup.html",
    "theme_icons": [
      {
        "light": "images/icon_white_16.png",
        "dark": "images/icon_black_16.png",
        "size": 16
      },
      {
        "light": "images/icon_white_32.png",
        "dark": "images/icon_black_32.png",
        "size": 32
      }
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/vendor.js",
        "js/content_script.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/vendor.js",
      "js/background.js"
    ]
  },
  "permissions": [
    "storage",
    "<all_urls>",
    "http://*/*",
    "https://*/*",
    "webRequest",
    "webRequestBlocking"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9e5f1b2d-5a8e-497f-9f3a-3fcab07809d3}"
    }
  }
}