Examine source code of FLOW PAGE Test version

{
  "manifest_version": 2,
  "name": "FLOW PAGE Test version",
  "version": "0.3.4",
  "description": "Speech (Auto Read & Auto Scroll) ",
  "default_locale": "en",
  "applications": {
    "gecko": {
      "id": "flowpage-test2@lifenote.tokyo"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    "images/*"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self';",
  "icons": {
    "48": "icons/FlowPage-Icon 48.png",
    "96": "icons/FlowPage-Icon 96.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icons/FlowPage-Icon small 16.png",
      "32": "icons/FlowPage-IconSmall.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "FlowPage.js",
        "qrcode.min.js"
      ],
      "css": [
        "flowpage.css"
      ]
    }
  ],
  "permissions": [
    "storage",
    "tabs"
  ]
}