Examine source code of Simple Video Controller

{
  "name": "Simple Video Controller",
  "version": "0.2.0",
  "description": "Simple open source HTML5 video speed controller",
  "permissions": [
    "storage",
    "tabs",
    "webNavigation",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{72a1c404-12c4-4d43-9cbf-a63675cceecc}"
    }
  }
}