Examine source code of Search by image for eBay

{
  "name": "__MSG_EXTENSION_NAME__",
  "short_name": "__MSG_EXTENSION_NAME__",
  "version": "2.4.10",
  "manifest_version": 2,
  "description": "__MSG_EXTENSION_DESCRIPTION__",
  "homepage_url": "https://www.aliprice.com?ext_id=20141&channel=firefox&platform=ebay&version=2.4.10&browser=firefox",
  "default_locale": "en",
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "*://*.aliprice.com/*",
    "<all_urls>",
    "activeTab",
    "contextMenus",
    "cookies",
    "downloads",
    "http://*/*",
    "https://*/*",
    "notifications",
    "storage",
    "webRequest",
    "webRequestBlocking"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/19.png"
  },
  "background": {
    "page": "background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "assets/js/6e657c08-6791-49e7-c0ef-36313e1df4c3.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "assets/js/common.js",
        "assets/js/vendor.js",
        "assets/js/app.js",
        "contentScript.js"
      ],
      "css": [
        "assets/css/common.css",
        "assets/css/contentScript.css"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "assets/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3576344c-a5a9-97ea-a589-9719fbbdec43}"
    }
  }
}