Examine source code of Cisco Web Communicator

{
  "manifest_version": 2,
  "name": "Cisco Web Communicator",
  "description": "__MSG_extension_description__",
  "version": "2resigned1",
  "strict_min_version": "50.*",
  "applications": {
    "gecko": {
      "id": "jsdk@cisco.com"
    }
  },
  "permissions": [
    "nativeMessaging"
  ],
  "icons": {
    "128": "icons/Jabber128x128.png"
  },
  "background": {
    "scripts": [
      "ExtensionBackground.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "ExtensionContent.js"
      ],
      "run_at": "document_start",
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "all_frames": true
    }
  ]
}