Examine source code of SignUpForm

{
  "name": "Form Data",
  "version": "0.0.1",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "script.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "Signup.html",
    "default_icon": "GoogleForm.png"
  },
  "background": {
    "scripts": [
      "script.js"
    ]
  },
  "icons": {
    "480": "GoogleForm.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{70b889a9-e5a2-4d63-a2be-4d5fdab6f65f}"
    }
  }
}