Examine source code of Auto Highlight

{
  "manifest_version": 2,
  "version": "5.3",
  "author": "Juraj Mäsiar",
  "default_locale": "en",
  "name": "__MSG_app_name__",
  "description": "__MSG_app_desc__",
  "icons": {
    "48": "48.png",
    "128": "128.png"
  },
  "background": {
    "page": "background/background_ah.html"
  },
  "browser_action": {
    "default_area": "navbar",
    "default_icon": {
      "128": "128.png"
    },
    "default_popup": "popup/popup.html"
  },
  "commands": {
    "toggle-highlight": {
      "suggested_key": {
        "default": "Ctrl+Alt+H"
      },
      "description": "Toggles global highlight ON / OFF"
    }
  },
  "permissions": [
    "contextMenus",
    "storage",
    "scripting",
    "alarms",
    "activeTab",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "js": [
        "content_scripts/page_loaded.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "admin@fastaddons.com_AutoHighlight",
      "strict_min_version": "115.0"
    },
    "gecko_android": {
      "strict_min_version": "115.0"
    }
  }
}