Examine source code of WebAppFind

{
  "manifest_version" : 2 ,
  "name" : "__MSG_extensionName__" ,
  "short_name" : "__MSG_extensionShortName__" ,
  "description" : "__MSG_extensionDescription__" ,
  "version" : "3.4.4resigned1",
  "author": "Brett Zamir",
  "homepage_url" : "https://github.com/brettz9/webappfind",
  "content_security_policy" : "script-src 'self' 'unsafe-eval'; object-src 'self';",
  "optional_permissions" : [
    "bookmarks" ,
    "browserSettings" ,
    "clipboardRead" ,
    "clipboardWrite" ,
    "cookies" ,
    "geolocation" ,
    "idle" ,
    "notifications" ,
    "topSites" ,
    "webRequestBlocking" 
  ],
  "$$$comment-optional-permissions": "`background`, `contentSettings`, `debugger`, `management`, `pageCapture` were giving console warnings",
  "permissions" : [
    "nativeMessaging" ,
    "<all_urls>" ,
    "contextMenus" ,
    "activeTab" ,
    "tabs" ,
    "webNavigation" ,
    "history" ,
    "webRequest" ,
    "unlimitedStorage" ,
    "alarms" ,
    "browsingData" ,
    "contextualIdentities" ,
    "downloads" ,
    "downloads.open" ,
    "find" ,
    "identity" ,
    "menus" ,
    "pkcs11" ,
    "privacy" ,
    "proxy" ,
    "sessions" ,
    "storage" ,
    "tabHide" ,
    "theme" 
  ],
  "icons" : {
    "48" : "icons/icon48.png",
    "96" : "icons/icon96.png"
  },
  "default_locale" : "en" ,
  "browser_action" : {
    "browser_style": true,
    "default_area": "navbar",
    "default_icon" : "/executable-builder/executable.svg",
    "default_title" : "__MSG_browser_action_title__" ,
    "default_popup" : "/executable-builder/index.html"
  },
  "background" : {
    "page": "/lib/background.html"
  },
  "options_ui" : {
    "page": "options/options.html" ,
    "browser_style": true,
    "chrome_style": true,
    "open_in_tab": false
  },
  "applications": {
    "gecko": {
      "id": "webappfind@brett-zamir.me",
      "strict_min_version": "63.0"
    }
  }
}