Examine source code of WalkTheLine GPS Simulator

{
  "manifest_version": 2,
  "name": "Geolocation Debugger (Per-Tab)",
  "version": "0.1.0",
  "description": "Manual geolocation spoofing with per-tab control, walking simulation, and saved locations.",
  "permissions": [
    "storage",
    "tabs",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "jessedp@gmail.com",
      "strict_min_version": "109.0"
    }
  },
  "devtools_page": "devtools/devtools.html",
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "persistent": true
  },
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content-bridge.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    "content/page-script.js"
  ]
}