Examine source code of PhishFoil

{
  "description": "Anti Phisher is designed to protect you from selected phishing campaigns",
  "manifest_version": 2,
  "name": "PhishFoil",
  "version": "1.2",
  "homepage_url": "http://www.phishfoil.com",
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "icons": {
    "32": "icons/main.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "<all_urls>",
    "scripting",
    "activeTab",
    "tabs",
    "storage",
    "webNavigation"
  ],
  "browser_action": {
    "default_icon": "icons/main.png",
    "theme_icons": [
      {
        "light": "icons/main.png",
        "dark": "icons/main.png",
        "size": 32
      }
    ],
    "default_title": "AntiPhisher",
    "default_popup": "popup/antiphish.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9bfccb98-6c7f-487f-8b9c-ce08bfb20c83}"
    }
  }
}