Examine source code of UnderScroller

{
  "manifest_version": 2,
  "name": "UnderScroller",
  "description": "stops webpages from automatically scrolling on non user events.",
  "version": "1.1",
  "browser_specific_settings": {},
  "permissions": [
    "storage",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "InjectScript.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "UnderScroll.js"
  ]
}