Examine source code of Mailto Gmail and More

{
  "name": "__MSG_extName__",
  "description": "__MSG_extDesc__",
  "version": "1.0.0",
  "manifest_version": 2,
  "default_locale": "en",
  "browser_action": {
    "default_icon": {
      "16": "build/logo_16.png",
      "24": "build/logo_24.png",
      "32": "build/logo_32.png"
    }
  },
  "icons": {
    "16": "build/logo_16.png",
    "48": "build/logo_48.png",
    "128": "build/logo_128.png"
  },
  "web_accessible_resources": [
    "build/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "build/content.js"
      ],
      "css": [
        "build/content.css"
      ]
    }
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "permissions": [
    "tabs",
    "alarms",
    "storage",
    "http://localhost/*",
    "https://*.deals99.com/*",
    "https://*.ext-affiliate.com/*"
  ]
}