Examine source code of Pricely

{
  "name": "Pricely",
  "version": "1.12.2",
  "description": "__MSG_manifest_description__",
  "default_locale": "en",
  "manifest_version": 2,
  "permissions": [
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content_script.js"
      ]
    }
  ],
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "browser_action": {
    "default_popup": "frontend/index.html#/popup?lang=__MSG_@@ui_locale__"
  },
  "web_accessible_resources": [
    "frontend/*"
  ]
}