Examine source code of Pop Zoom

{
  "manifest_version": 2,
  "name": "Pop Zoom",
  "version": "1.0.2",
  "author": "Scott Warner",
  "description": "Pops page into view once loaded.",
  "permissions": [
    "storage",
    "tabs",
    "activeTab"
  ],
  "page_action": {
    "browser_style": true,
    "default_title": "Pop Zoom",
    "default_popup": "whitelist.html",
    "show_matches": [
      "<all_urls>"
    ],
    "default_icon": {
      "19": "glass-19.png",
      "38": "glass-38.png"
    }
  },
  "background": {
    "scripts": [
      "background.js",
      "whitelist.js"
    ]
  },
  "icons": {
    "48": "glass-48.png",
    "96": "glass-96.png"
  },
  "options_ui": {
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "pop.css"
      ],
      "js": [
        "pop.js"
      ],
      "run_at": "document_start"
    }
  ]
}