Examine source code of QR Code

{
  "manifest_version": 2,
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "default_locale": "en_US",
  "name": "__MSG_browser_extension_name__",
  "description": "__MSG_browser_extension_description__",
  "version": "66.0.3",
  "permissions": ["storage", "tabs", "activeTab", "contextMenus"],
  "web_accessible_resources": ["*"],
  "page_action": {
    "default_icon": {
      "19": "images/icon-filled-19.png",
      "38": "images/icon-filled-38.png"
    },
    "default_title": "__MSG_page_action_title__"
  },
  "content_scripts": [{
    "matches": ["<all_urls>"],
    "js": ["javascript/content.js"]
  }],
  "background": {
    "scripts":  ["javascript/background.js"]
  },
  "icons": {
    "48": "images/icon.png",
    "96": "images/iconx2.png"
  },
//  "homepage_url": "https://example.com/",
  "options_ui": { "page": "views/options.html" }
}