Examine source code of Global Timezone Changer

{
  "version": "0.1.5",
  "manifest_version": 2,
  "short_name": "__MSG_extensionName__",
  "name": "__MSG_extensionName__",
  "background": {
    "page": "lib/chrome/background.html"
  },
  "permissions": [
    "*://*/*",
    "storage",
    "contextMenus",
    "webNavigation"
  ],
  "description": "__MSG_extensionDescription__",
  "options_ui": {
    "open_in_tab": true,
    "chrome_style": true,
    "page": "data/options/options.html"
  },
  "browser_action": {
    "default_title": "__MSG_extensionName__",
    "default_icon": {
      "16": "data/icons/16.png",
      "32": "data/icons/32.png",
      "48": "data/icons/48.png",
      "64": "data/icons/64.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "collects_data": false
      },
      "id": "{1c4f3653-7472-4121-b4ab-4a654416b0b0}"
    }
  },
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png"
  }
}