Examine source code of Piazza Helper Toolkit

{
  "name": "Piazza Helper Toolkit",
  "short_name": "Piazza tools",
  "version": "1.1resigned1",
  "description": "Helper Toolkit for Piazza",
  "manifest_version": 2,
  "icons": {
    "19": "images/icon19.png",
    "38": "images/icon38.png",
    "48": "images/icon48.png",
    "96": "images/icon96.png",
    "128": "images/icon128.png"
  },
  "background": {
    "scripts": [
      "piazzaToolkitBg.js"
    ]
  },
  "page_action": {
    "default_title": "Piazza Helper Toolkit",
    "default_icon": {
      "19": "images/icon19.png",
      "38": "images/icon38.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    },
    "default_popup": "popup/show-hide-resolved.html",
    "browser_style": true
  },
  "content_scripts": [
    {
      "matches": [
        "http://piazza.com/*",
        "https://piazza.com/*"
      ],
      "all_frames": true,
      "js": [
        "piazzaToolkitCS.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0237b76f-65f2-45d4-aafd-6e216795c495}"
    }
  }
}