Examine source code of QR Code Tab Refactoring

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "2.1.2",
  "default_locale": "en",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png"
    },
    "default_title": "__MSG_extensionTitle__",
    "default_popup": "index.html"
  },
  "page_action": {
    "browser_style": true,
    "default_icon": "icons/icon.svg",
    "default_title": "__MSG_extensionTitle__",
    "default_popup": "index.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{62e3f118-5444-4c12-838f-68ce187f42d3}"
    }
  }
}