Examine source code of Angular DevTools

{
  "manifest_version" : 2 ,
  "short_name" : "Angular DevTools",
  "name" : "Angular DevTools",
  "description" : "Angular DevTools extends Firefox DevTools adding Angular specific debugging and profiling capabilities.",
  "version" : "1.20.0",
  "content_security_policy" : "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "icons" : {
    "16" : "assets/icon16.png",
    "48" : "assets/icon48.png",
    "128" : "assets/icon128.png"
  },
  "browser_action" : {
    "default_popup" : "popups/not-angular.html"
  },
  "devtools_page": "devtools.html",
  "web_accessible_resources" : [
    "app/backend_bundle.js",
    "devtools.html"
  ],
  "background" : {
    "scripts" : [
      "app/background_bundle.js" 
    ]
  },
  "permissions" : [
    "activeTab" ,
    "storage" ,
    "http://*/*" ,
    "https://*/*" ,
    "file:///*" 
  ],
  "content_scripts" : [
    {
      "matches" : [
        "<all_urls>" 
      ],
      "js" : [
        "app/ng_validate_bundle.js" 
      ],
      "run_at" : "document_idle" ,
      "all_frames" : true 
    },
    {
      "matches" : [
        "<all_urls>" 
      ],
      "js" : [
        "app/content_script_bundle.js" 
      ],
      "run_at" : "document_idle" ,
      "all_frames" : true 
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{20a9bb38-ed7c-4faf-9aaf-7c5d241fd747}"
    }
  }
}