Examine source code of PROXYCC

{
  "manifest_version": 2,
  "name": "__MSG_name__",
  "description": "__MSG_description__",
  "version": "0.0.1",
  "default_locale": "zh_CN",
  "incognito": "spanning",
  "icons": {
    "16": "assets/icons/16x16.png",
    "32": "assets/icons/32x32.png",
    "48": "assets/icons/48x48.png",
    "128": "assets/icons/128x128.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "webRequest",
    "webRequestAuthProvider",
    "storage",
    "proxy",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    "assets/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "support@proxy.cc",
      "strict_min_version": "91.1.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "homepage_url": "https://proxy.cc/"
}