Gmail Origin Flags

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Gmail Origin Flags",
  "version": "1.1",
  "manifest_version": 2,
  "description": "Displays the country flag and other information related to the origin of an e-mail",
  "icons": {
    "16": "icons/passports-16.png",
    "48": "icons/passports-48.png",
    "128": "icons/passports-128.png"
  },
  "homepage_url": "http://www.cs.columbia.edu/~kontaxis/",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://mail.google.com/*"
      ],
      "all_frames": true,
      "js": [
        "cs_magic.js"
      ]
    }
  ],
  "permissions": [
    "tabs",
    "https://mail.google.com/*"
  ],
  "web_accessible_resources": [
    "flags/*"
  ]
}