Examine source code of Flameback

{
  "manifest_version": 2,
  "name": "Flameback",
  "version": "1.0.1",
  "description": "Pecking away at back web design, such as removing onpaste events from elements.",
  "icons": {
    "48": "icons/flameback-48.png",
    "96": "icons/flameback-96.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "icons/flameback-19.png",
      "38": "icons/flameback-38.png"
    },
    "default_title": "flameback"
  },
  "background": {
    "scripts": [
      "js/background-button.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/content.js"
      ]
    }
  ]
}