Google Voice (by Google)

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Google Voice (by Google)",
  "version": "3.0.11",
  "description": "Make calls with Google Voice with a click.",
  "manifest_version": 3,
  "icons": {
    "16": "/images/logo_voice_2020q4_color_2x_web_16dp.png",
    "32": "/images/logo_voice_2020q4_color_2x_web_32dp.png",
    "48": "/images/logo_voice_2020q4_color_2x_web_48dp.png",
    "128": "/images/logo_voice_2020q4_color_2x_web_96dp.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "contextMenus"
  ],
  "background": {
    "service_worker": "background_js.js"
  },
  "action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "css": [
        "contentscript.css"
      ],
      "js": [
        "contentscript_js.js"
      ],
      "all_frames": true
    }
  ],
  "options_page": "options.html"
}