Examine source code of ChromeLogger

{
  "manifest_version": 2,
  "name": "ChromeLogger",
  "version": "3.0",
  "description": "Parses and displays messages from X-ChromeLogger-Data and X-ChromePHP-Data headers in DevTools Web Console facilitating server-side debugging via the Chrome Logger protocol ( https://craig.is/writing/chrome-logger/ ).",
  "homepage_url": "https://github.com/burningmoth/burningmoth-chromelogger-firefox",
  "author": "Tarraccas Obremski",
  "background": {
    "scripts": [
      "global.js",
      "bg.js"
    ]
  },
  "permissions": [
    "<all_urls>",
    "activeTab",
    "webRequest",
    "webNavigation",
    "storage",
    "notifications"
  ],
  "options_ui": {
    "page": "options.html"
  },
  "devtools_page": "dev.html",
  "browser_specific_settings": {
    "gecko": {
      "id": "chromelogger@burningmoth.com"
    }
  },
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  }
}