Examine source code of AutoScroller

{
  "applications": {
    "gecko": {
      "id": "{9242aa97-ecc3-4f15-9142-474a66c3e0ca}"
    }
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "browser_action": {
    "default_icon": "img/dead.svg",
    "default_title": "AutoScroller"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/content_scripts.js"
      ]
    }
  ],
  "description": "AutoScroller",
  "homepage_url": "https://github.com/KazuakiM/autoscroller",
  "icons": {
    "48": "img/dead.svg",
    "96": "img/dead.svg"
  },
  "manifest_version": 2,
  "name": "AutoScroller",
  "options_ui": {
    "page": "src/options_ui.html"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "version": "1.4resigned1"
}