Examine source code of Moodle De-Clutterer

{
  "name": "Moodle De-Clutterer",
  "description": "Gets Rid Of Clutter on Moodle.",
  "version": "0.2",
  "manifest_version": 2,
  "permissions": [
    "storage",
    "activeTab",
    "scripting",
    "tabs",
    "webNavigation"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "/images/get_started16.png",
      "32": "/images/get_started32.png",
      "48": "/images/get_started48.png",
      "128": "/images/get_started128.png"
    }
  },
  "icons": {
    "16": "/images/get_started16.png",
    "32": "/images/get_started32.png",
    "48": "/images/get_started48.png",
    "128": "/images/get_started128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.moodle.rose-hulman.edu/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "run_at": "document_end"
}