Examine source code of GitHub Pane Maximization

{
  "name" : "GitHub Pane Maximization",
  "description" : "GitHub Pane Maximization",
  "version" : "1.5",
  "manifest_version" : 2 ,
  "browser_action" : {
    "default_icon" : "img/icon16.png"
  },
  "icons" : {
    "16" : "img/icon16.png",
    "32" : "img/icon32.png",
    "48" : "img/icon48.png",
    "128" : "img/icon128.png"
  },
  "background" : {
    "scripts" : [
      "src/background/background.js" 
    ],
    "persistent" : false 
  },
  "permissions" : [
    "tabs" ,
    "https://*/blob/*" ,
    "https://*/pull/*" ,
    "https://*/compare/*" ,
    "https://*/commit/*" ,
    "storage" 
  ]
}