Spam filter for WhatsApp

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Spam filter for WhatsApp",
  "short_name": "Whatsilent",
  "manifest_version": 2,
  "version": "1.0.0.3",
  "description": "Block annoying forwards & loudmouths in your Whatsapp group",
  "icons": {
    "16": "images/logo16.png",
    "32": "images/logo32.png",
    "48": "images/logo48.png",
    "128": "images/logo128.png"
  },
  "browser_action": {
    "default_title": "Launch WhatsApp",
    "default_icon": "images/logo16.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://web.whatsapp.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "options_page": "options.html",
  "permissions": [
    "tabs",
    "identity",
    "identity.email"
  ]
}