Examine source code of Browser Session Manager

{
  "manifest_version": 2,
  "version": "1.0.1",
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "applications": {
    "gecko": {
      "id": "{eebbd414-09fd-11f0-9cd2-0242ac120002}"
    }
  },
  "permissions": [
    "storage",
    "unlimitedStorage",
    "tabs",
    "cookies"
  ],
  "options_ui": {
    "page": "options/options.html"
  },
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "64": "icons/64.png",
    "128": "icons/128.png",
    "256": "icons/256.png",
    "512": "icons/512.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/16.png",
      "32": "icons/32.png",
      "64": "icons/64.png",
      "128": "icons/128.png",
      "256": "icons/256.png",
      "512": "icons/512.png"
    },
    "default_popup": "popup/popup.html"
  }
}