Examine source code of Localise Times

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "1.40.16",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "16": "icons/icon_16.png",
    "32": "icons/icon_32.png",
    "48": "icons/icon_48.png",
    "64": "icons/icon_64.png",
    "96": "icons/icon_96.png",
    "192": "icons/icon_192.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "run_at": "document_end",
      "all_frames": true,
      "js": [
        "popup/tzInfo.js",
        "localisetimes.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "static.css"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon_16.png",
      "19": "icons/icon_19.png",
      "32": "icons/icon_32.png",
      "38": "icons/icon_38.png",
      "48": "icons/icon_48.png",
      "64": "icons/icon_64.png"
    },
    "default_title": "__MSG_extensionName__",
    "default_popup": "popup/popup.html",
    "browser_style": true
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "popup/popup.html"
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs"
  ],
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "{81e8612d-b676-4a4f-85a7-478dd3d39a97}"
    }
  }
}