Automatically clean up the browser

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "__MSG_EXT_NAME__",
  "version": "0.1.0",
  "description": "__MSG_EXT_DESC__",
  "browser_specific_settings": {
    "gecko": {
      "id": "auto_clear_cache@firefox",
      "strict_min_version": "57.0"
    }
  },
  "default_locale": "zh_CN",
  "icons": {
    "16": "imgs/icon_16px.png",
    "19": "imgs/icon_19px.png",
    "32": "imgs/icon_32px.png",
    "48": "imgs/icon_48px.png",
    "128": "imgs/icon_128px.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "imgs/icon_19px.png",
      "38": "imgs/icon_38px.png"
    },
    "default_title": "__MSG_ICON_TIPS__",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "permissions": [
    "browsingData",
    "storage"
  ],
  "options_ui": {
    "page": "options.html",
    "chrome_style": true,
    "browser_style": true,
    "open_in_tab": true
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "manifest_version": 2
}