Examine source code of WDWeather

{
  "manifest_version": 2,
  "name": "WDWeather",
  "version": "6.2resigned1",
  "description": "使用微度天气API获取中国城市天气预报(webExtension版本)",
  "homepage_url": "http://sonichy.96.lt",
  "icons": {
    "48": "icon.png"
  },
  "permissions": [
    "<all_urls>",
    "storage",
    "webRequest"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "微度天气预报",
    "default_popup": "panel.htm"
  },
  "web_accessible_resources": [
    "<all_urls>"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self' ",
  "browser_specific_settings": {
    "gecko": {
      "id": "{a10bb8a9-2df7-4490-b2d4-be0d24ee3a8e}"
    }
  }
}