Examine source code of Dooksa DevTools

{
  "description" : "DevTools extension for debugging Dooksa",
  "manifest_version" : 2 ,
  "name" : "Dooksa DevTools",
  "version" : "1.0.10",
  "author": "Thomas David",
  "homepage_url" : "https://bitbucket.org/dooksa/ds-devtool-extension/src/master/",
  "icons" : {
    "48" : "icons/icon-48.png",
    "92" : "icons/icon-92.png"
  },
  "background" : {
    "scripts" : [
      "background_scripts/background.js" 
    ]
  },
  "permissions" : [
    "<all_urls>" 
  ],
  "devtools_page": "devtools/devtools-page.html",
  "content_scripts" : [
    {
      "matches" : [
        "<all_urls>" 
      ],
      "js" : [
        "content-script.js" 
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{49b3ecbe-949d-4cfb-8926-45e1b1182b41}"
    }
  }
}